Aquatic Turtle Supplies, Food & Care Guides

Every spring, young turtles turn up in pet shops and roadside tubs: a shell not much bigger than your palm, a bright little face, a stubby tail paddling in circles. They look like a weekend project. They are not. A pet aquatic turtle is a 20 to 40 year commitment, and that palm-sized youngster will grow into a dinner-plate-sized adult that eats more, makes more mess and needs far more water than the baby ever suggested. We say that with a smile, because we love these animals. A well-kept turtle is a fascinating, long-lived companion that learns your footsteps, begs at the glass when you walk in, and basks with the blissed-out look of a creature that has found its perfect sunny log. But the most common reason turtles end up surrendered or dumped in local ponds is that nobody told the owner what the baby would become. You're reading this guide, so you're already ahead. Plan for the adult before you buy the baby, and we'll walk through the rest together.

Quick Start: Your First 48 Hours

1. Set up the tank before the turtle comes home, and plan for the adult. A hatchling or small juvenile can live in a 20–40 gallon tank for a short stage, but the rule of thumb for the long haul is about 10 gallons of water per inch of shell length. An adult red-eared slider needs roughly 75–125+ gallons. A full 100-gallon tank weighs well over 800 pounds, so check that your floor and stand can carry it.
2. Add a canister filter and let the water settle. A canister filter is a sealed barrel that sits beside or under the tank and pushes water through large trays of filter media, and it is the workhorse of a turtle tank. Choose one rated for two to three times your actual tank volume. Fill the tank with dechlorinated tap water and run the filter for at least a day before the turtle arrives.
3. Build the basking area. Basking means hauling out of the water to sit in warmth and light, and it is not optional. Install a dock or ramp that lets your turtle climb completely out and dry off entirely, with a heat lamp above it. The dock surface should reach 90–95°F, with the air just above it around 85–90°F. Check with a digital probe or infrared temperature gun, not a guess.
4. Install the UVB light and run it for a day before arrival. UVB is the invisible part of sunlight that lets your turtle make vitamin D3 and absorb calcium. Without it the shell and bones soften into metabolic bone disease (MBD). Use a linear 5.0/10.0 tube or a T5 HO fixture over the basking spot at the manufacturer's recommended distance. White bulbs and window light through glass will not do the job.
5. Warm the water to 75–80°F. A guarded submersible heater holds the temperature steady. Hatchlings do best slightly warmer, around 78–82°F. Confirm with a thermometer and wait until the number holds for a full day.
6. Dechlorinate every drop of tap water. Chlorine and chloramine irritate skin and eyes, so use a water conditioner on every fill and top-off.
7. Keep the first meal simple. A quality turtle pellet, a leaf of romaine, and a sprig of anacharis (also sold as elodea, a hardy aquatic plant) are the right welcome. Feed only what your turtle finishes in 5–10 minutes.
8. Let your turtle settle in. Put the lid on and leave it alone except for quiet checks. A new turtle may hide for a day or two. Watching from a few feet away teaches you more than touching ever will.
9. Find a reptile veterinarian before you need one. Turtles hide illness well. The problems we see most are swollen, closed eyes from hypovitaminosis A (too little vitamin A, usually from a poor diet) and shell trouble. Confirm the clinic treats turtles specifically and keep the number handy.
10. Make hand-washing a house rule on day one. Turtles commonly carry Salmonella, a bacterium that makes people sick. Wash with soap and warm water after any contact with the turtle, tank or tank water, every time, and never rinse tank parts in your kitchen sink.

First-Time Starter Bundle

What needs to be in the house on day one, and what to look for in each category.

Essentials

• A large glass aquarium or purpose-built turtle tank sized for the current stage, with a plan for the adult. Floor area matters more than height. A tight screen lid is a must for the lamps and for escape artists.
• A canister filter rated for two to three times the tank volume, with room for mechanical and biological media and adjustable flow so small, weak swimmers aren't pushed around.
• A submersible aquarium heater with a guard, sized for your tank. Turtles crack unprotected glass heaters. Large tanks do well with two smaller heaters for backup.
• A basking dock or ramp-style platform, stable and textured, large enough for the whole body to leave the water and dry.
• A basking heat lamp, dome fixture and flood bulb (halogen or incandescent) in a ceramic-socket fixture rated for the wattage.
• A linear UVB tube (5.0/10.0) or T5 HO fixture long enough to cover the dock, with a reflector. Mark the install date on it.
• Two reliable thermometers, one digital probe for the water and one probe or infrared temperature gun for the dock surface.
• Outlet timers to keep the day and night cycle steady.
• Water conditioner (dechlorinator) for every fill and water change.
• A liquid water test kit for ammonia, nitrite, nitrate and pH.
• A siphon or water-change hose and a dedicated bucket, used only for turtle care.
• A quality commercial turtle pellet made for aquatic turtles, in a size your turtle can swallow.
• A cuttlebone, the white chalky shell of a cuttlefish, sold as a calcium source. Clip or float it in the tank.

Ready to set up? Browse the essentials in our collections: Reptile and Amphibian Enclosures, Reptile and Amphibian Terrarium Supplies & Accessories, Aquarium Filters, Pumps & Media and Aquarium Lighting.

Enrichment

• Aquatic plants such as anacharis or water sprite for cover and grazing. Some will get shredded, and that's part of the fun.
• Smooth river stones and driftwood, rounded and bigger than your turtle's head so they can't be swallowed, placed so they never form a pinch point.
• A cave or cover, such as a half-log, leaned slate or floating plant mat. Shy species like map and musk turtles appreciate a retreat.
• A background for three sides of the tank to soften movement outside the glass.
• A feeding tub, clean, dedicated and big enough for the turtle to turn around, which keeps the main tank cleaner.
• A secure travel container, ventilated with a lid, for vet visits and tank cleanings.
• A shaded, predator-safe outdoor tub for supervised sun on warm days. Natural sunlight is the best UVB there is, as long as your turtle can always get out of the heat.

Enrichment, one click away. Shop Reptile and Amphibian Accessories.

Meet Your Aquatic Turtle

"Aquatic turtle" is a casual label for several species that spend most of their lives in water and come out to bask. Most are semi-aquatic: they swim and feed in the water but need a dry spot to warm up, rest and dry their shells. Their wild homes are the slow rivers, ponds and marshes of North America, where a good basking log is prime real estate and the water is full of plants, snails, insects and small fish. A good turtle setup recreates that: deep clean water, a sunny log, and a lot of room.

Here are the five groups you're most likely to meet.

The red-eared slider is by far the most common, and the rest of this guide leans on it as the example. Where the other species differ, we say so.

Origin, legality and the 4-inch rule

Red-eared sliders are native to the Mississippi River basin and the southern United States, but decades of released and escaped pets have made them one of the most widespread invasive species on earth, which shapes what responsible ownership looks like (see Handling & Hygiene and the FAQ). Painted, map, musk and mud turtles are native to eastern and central North America. Wild native turtles are protected by law in many states, so a turtle should always come from a captive-bred source and never from your local creek.

A federal FDA rule in place since 1975 bans the sale of turtles with a shell under 4 inches long, except for bona fide scientific, educational or exhibition purposes (not as pets) and for export. It was meant to cut Salmonella cases from tiny turtles that are easy to handle and put near the mouth. In practice, the youngsters in shops are 4 inches or more, which is still a baby. State and local laws may add rules on particular species, permits or trade, so check with your state wildlife agency before you buy.

A note for Pennsylvania families. Painted turtles, map turtles, musk turtles and mud turtles are all native to Pennsylvania, and the state treats native reptiles differently from non-native pets. Pennsylvania Fish and Boat Commission rules make it unlawful to bring a native reptile into the state from another state, and to buy or sell a native reptile taken in Pennsylvania or its offspring (58 Pa. Code §§ 79.9 and 79.10). Taking one from the wild requires a fishing license and is limited, and some species, such as the eastern mud turtle and red-bellied cooter, are protected. If you live in Pennsylvania, talk to the Fish and Boat Commission before you buy any native species, and never release a pet turtle outdoors.

The honest commitment framing: what you are actually signing up for

This is the most important section in this guide. Please read it carefully.

A turtle from the shop is a few inches long. It fits in a 20-gallon tank, nibbles a few pellets, and paddles in cute little circles. This is the animal people fall for.

Within a few years, that turtle (if it is a red-eared slider) is a foot-long reptile that eats like a horse, splashes water over the rim, and fouls its tank within a day or two unless the filter is powerful. A female slider can reach 12 inches and weigh several pounds. She needs close to 100 gallons, strong lighting, a big filter, and a weekly cleaning routine that takes time and muscle. She will live twenty, thirty, possibly forty years. She may outlive your first mortgage and still be basking happily when your kids are grown.

None of this makes a turtle a bad pet. It makes a turtle a serious one. If you are ready for a decades-long commitment to a large, messy, long-lived reptile that needs deep water, strong filtration, UVB lighting and a reptile-savvy vet, you're in the right place. If you can't picture the adult in your home for twenty-five years, choose a smaller species (a musk or mud turtle stays 3 to 5 inches), or pass for now. The turtles will thank you.

Anatomy words worth knowing

The domed top of the shell is the carapace and the flat belly shell is the plastron. Both are covered in horny plates called scutes, made of keratin, the same material as your fingernails. Scutes shed periodically as the turtle grows, which is normal when it looks clean. Beneath them is bone fused to the ribs and spine, and the shell is living tissue with nerves and blood vessels, which is why a cracked or rotting shell is a medical problem, not a cosmetic one.

Temperament and company

Turtles are watching pets rather than cuddling pets. Most settle into a rhythm and learn the person who feeds them, and sliders often swim to the glass and perform for food. They are not social. Housing two together is a gamble, since bullying, biting and fights over the basking spot are common and the weaker animal can quietly starve. One turtle per tank is the safest default, and never house turtles with fish you care about.

What surprises new owners

Four things catch most new owners off guard. Water weight: a 125-gallon tank is more than a thousand pounds with glass, stand and water. Mess: turtles eat and relieve themselves in the water they swim in, so cloudy, swampy tanks come fast without strong filtration. Personality: sliders beg, splash, and learn feeding time quickly. And the long game: the tiny turtle in the shop is not what you'll be living with in five years. Buy for the adult and you'll never have to rehome a turtle you've come to love.

Tank, Filtration & Basking Setup

Choosing the right tank

The classic rule is about 10 gallons of water per inch of shell length. A 4-inch turtle starts at 40 gallons; a 10-inch adult red-eared slider lands at 100. Think of this as a starting point rather than a ceiling. More room is always better, and floor area matters more than height.

Hatchlings in 20–40 gallon tanks are a temporary stage, not a destination. Plan your upgrade the moment you buy the first tank, not the moment the turtle starts to bump the walls.

Water depth should be about 1.5 to 2 times your turtle's shell length for sliders, painted and map turtles, so that if it ends up on its back, it has room to flip back over and swim without panic. Musk and mud turtles are bottom walkers and weak swimmers, so keep their water shallow (around the length of their shell or less) and make every dock and decoration easy to climb.

A word about outdoor ponds. In warm months, a predator-safe, shaded outdoor pond or large stock tank is a wonderful upgrade for an adult turtle. It needs a secure fence or lid, filtration or regular water changes, basking spots and shade. In a Pennsylvania climate your turtle comes back inside before cold weather, so an indoor tank is the permanent base either way.

Filtration: the unglamorous hero

Turtles eat, drink and relieve themselves in the same water, and a hungry slider can foul a tank in an afternoon. That's why we recommend a canister filter rated for two to three times your actual tank volume. For a 100-gallon tank, shop for a filter rated for 200–300 gallons. It does three jobs. Mechanical filtration traps solids in sponges and floss, which you rinse regularly. Biological filtration supports beneficial bacteria that convert toxic ammonia from waste into nitrite and then much less toxic nitrate, a community that takes a few weeks to establish, which is why the filter should run before the turtle moves in. Chemical filtration, such as activated carbon, polishes the water and is optional.

A filter doesn't replace water changes. Plan on partial water changes of about 25% every week, always with dechlorinated water close to tank temperature. Point the outlet along the surface or toward the glass so a small turtle isn't blasted across the tank.

The basking area

A basking area has three jobs: warmth, UVB and a dry surface. The dock must be large enough that your turtle can climb out completely, lie flat with legs extended and dry entirely. A shell that never dries grows algae, fungus and rot. If your turtle keeps sliding off, add a gentle ramp or a textured surface such as rubber matting or rough slate.

A labeled layout, top to bottom

Picture the tank in side view. A well-built setup looks like this:

• A. Screen lid. Tight-fitting mesh across the top. It keeps your turtle in, keeps lamps and cords out of splash range, and lets heat and UVB through (mesh trims UVB a little, which is why the tube sits close).
• B. UVB tube and reflector. A linear 5.0/10.0 or T5 HO tube runs the length of the dock, above the lid at the manufacturer's recommended distance (commonly 10–18 inches above the dock). It runs 10–12 hours a day on a timer.
• C. Basking lamp. A halogen or incandescent flood bulb in a ceramic-socket dome, aimed at the dock and mounted at whatever height produces the target temperature (often 8–15 inches, depending on wattage). Dock surface: 90–95°F. Air just above: 85–90°F.
• D. Basking dock. On the right-hand side, a stable platform a few inches above the waterline, reached by a ramp or stepped rocks, wide enough for the full body to stretch out and dry.
• E. Water line. Filled to 1.5–2x shell length, with a few inches of headroom below the lid so your turtle can't easily climb out.
• F. Swim zone. The open left-hand side is empty on purpose. Turtles swim in straight lines and need a clear lane.
• G. Heater. Guarded, low at the back near the filter intake so warmed water circulates. Water holds 75–80°F; hatchlings 78–82°F.
• H. Filter intake and outflow. Two pipes, one low and one near the surface, at the opposite end from the dock. The canister sits in the stand below.
• I. Cover and décor. Smooth river stones and plants along the back wall, a hide on the cool end, and nothing narrow enough to trap a limb or shell.
• J. Substrate. Bare glass, large smooth stones, or a thin layer of sand (see the next section).

Substrate & Water Quality

Choosing what goes on the bottom

Many turtle keepers go bare-bottom, and there's a good reason for it: whatever covers the floor of the tank also traps waste. Turtles also swallow things, sometimes by accident while chasing a pellet. A stone small enough to fit in a turtle's mouth is a stone that can end up in its gut. The rule is simple: anything on the floor must be larger than your turtle's head, or fine enough to pass safely.

Water quality targets

Clean water is the single biggest predictor of a healthy turtle. The numbers below are your dashboard. A liquid test kit is the most accurate and affordable way to track them.

The cycle of ammonia to nitrite to nitrate is called the nitrogen cycle. New tanks take around four to six weeks to build a stable bacterial community, so add your turtle after the filter has been running, and be extra careful with water tests in the first month.

The weekly maintenance routine

Set aside an hour on the same day each week and run through these steps in order.

1. Unplug the heater and turn off the filter if you'll lower the water much. A heater can crack above the waterline.
2. Test the water and write the numbers in a log.
3. Siphon out about 25% of the water, lifting waste off the bottom. Send it to a utility sink, a toilet or a bucket, never your kitchen sink.
4. Wipe the glass and rinse the dock with a soft sponge reserved for the tank. Skip soaps and household cleaners; hot water and elbow grease work better.
5. Refill with dechlorinated water near tank temperature.
6. Check the filter flow. If it has slowed, rinse the sponges in a bucket of old tank water, never tap water, which kills beneficial bacteria.
7. Restart the heater and filter, confirm the temperature, and check the lamps.
8. Wash your hands thoroughly, then wash and disinfect the bucket, siphon and sponge and store them away from kitchen items.
9. Once a month, go deeper: a more thorough siphon, a media rinse, and a check of every cord, clip and dock mount.

Heat, UVB & Water — The 3 Numbers

A turtle is a cold-blooded (ectothermic) animal, which means it depends on the environment to set its body temperature. In the wild, it picks warm water, a sunlit log and shade according to what it needs. In your home, you have to supply all three. If you only remember three things from this guide, make them these: water temperature, basking temperature and UVB. Get them right together, and most of what goes wrong in turtle keeping never gets a chance to start.

Water temperature: the 75–80°F zone

Keep the water at 75–80°F, with hatchlings at 78–82°F. A guarded heater on a stable thermostat does the job. Cooler water slows digestion and suppresses the immune system, and a persistently cold turtle is an invitation to respiratory infection. In a hot summer, move the tank out of direct sun and use room fans rather than adding ice.

Basking: 90–95°F where it counts

The surface where your turtle rests should reach 90–95°F, with the air above it at 85–90°F. This is what helps it digest, dry its shell and skin, and make use of the UVB. Measure the dock surface with an infrared temperature gun, then adjust bulb wattage or lamp height until the numbers are right. The water itself is the cool zone, always within easy reach.

UVB and the Ferguson zone

The Ferguson zone system classifies reptiles by how much UV they get in the wild: zone 1 animals live in deep shade and zone 4 animals bake in open sun. Aquatic turtles that bask in open sunlight are zone 3, so they need a strong, high-output UVB source, and a linear 5.0/10.0 tube or T5 HO fixture is the standard answer. Mount it over the basking spot at the manufacturer's recommended distance. Glass and many plastics block UVB almost entirely, and mesh blocks some, so follow the distance chart for your lid type.

Replace the tube every 6 to 12 months per the manufacturer. Write the install date on the fixture and set a phone reminder, because visible light outlasts UVB output and a tube that still looks bright may no longer be doing its job.

A note on brumation

Brumation is the cold-weather slowdown wild turtles go through, when they stop eating and become nearly dormant. We do not recommend it for indoor captive turtles. Keep the water, basking and UVB steady all year, and attempt brumation only under the guidance of an experienced reptile vet.

Diet & Nutrition

Aquatic turtles are omnivores, which means they eat both animal and plant foods. The balance shifts with age. Young turtles, especially red-eared sliders, lean carnivorous and need roughly 50% protein to fuel fast growth. As they mature, they drift toward omnivore and even herbivore, eating more plants and less meat. Musk and mud turtles stay protein-focused their whole lives, and map turtles in particular love snails and crustaceans.

The good news is that a healthy, varied turtle diet is not complicated. The challenge is resisting the begging. A slider will make you feel like the worst person alive if you don't offer a third meal. Hold the line, and your turtle will live longer.

The building blocks

A balanced plate looks like this:

• Quality commercial turtle pellets (about one third of the diet). Choose a pellet made for aquatic turtles with a short ingredient list built around fish meal and whole foods. We believe in no mystery ingredients, so read the label.
• Leafy greens and aquatic plants (about one third, and more for adults). Dandelion greens, romaine, red leaf lettuce, collards, mustard and turnip greens, plus aquatics like anacharis (elodea) and duckweed. Many young sliders ignore greens at first, so keep offering.
• Occasional protein (the remainder, more for juveniles). Shrimp, earthworms, insects, snails and small feeder fish.
• Cuttlebone for calcium, floated or clipped in the tank. Many turtles ignore it for months, then chew it down.

Juvenile versus adult feeding

If your turtle leaves food behind, scoop it out and shrink the next portion. If it begs and you cave, the extra pounds creep on and the water goes cloudy.

Safe foods

Never feed

Vitamin A: why it matters so much

Hypovitaminosis A means "too little vitamin A," and it is among the most common problems in captive aquatic turtles. It shows up as swollen, puffy, closed eyes and sometimes a turtle that refuses to eat because it can't find its food. The usual cause is pellets only, low-quality pellets, or all lettuce and no color. Offer dark leafy greens, an occasional small piece of orange or red vegetable like squash, and a good pellet. Do not give vitamin A drops or injections on your own. Too much is also harmful, so leave dosing to your vet.

Supplement and feeding schedule

Feeding in a separate tub

Many experienced keepers feed in a separate tub of warm water from the main tank. Your turtle eats for 15 to 20 minutes, then goes back. Since turtles tend to relieve themselves while eating, most of the mess lands in a container that is easy to dump and rinse, and the main tank stays clearer.

Shop the food and supplies: Browse Reptile & Amphibian Food and Live Feed Delivered!.

Shell, Skin & Shedding

Your turtle's shell tells you a lot about its health. Learn what normal looks like now, and you'll spot trouble early.

What a healthy shell looks like

A healthy shell is hard, smooth to slightly textured, evenly colored and free of pits, soft spots or odd smells. When you press gently on the carapace, nothing gives. The plates (scutes) should lie flat and tight with clean seams between them. A slight natural sheen is fine. Raised, bumpy or pyramid-like scutes can point to growth that is too fast or an imbalance in diet and lighting, and a shell that feels soft or rubbery is an urgent sign of MBD.

Normal scute shedding

Aquatic turtles shed their scutes as they grow. Unlike snakes, they lose thin, translucent, paper-like flakes of keratin from each scute, sometimes in sheets that float around the tank and sometimes in bits that peel at the edges. This is normal, and most visible in growing juveniles. A turtle mid-shed may look pale or scruffy for a short while, then show bright new colors. Skin sheds too: thin, whitish strands on the neck, legs and tail that flake away are normal.

A shed is normal when the old layer is thin and milky and comes away on its own, the new scute beneath is smooth and well attached, and your turtle is eating, swimming and basking as usual. It becomes a problem (retained scutes) when old layers stay and stack into thick, dull, uneven patches, debris collects underneath causing odor, pits or discoloration, or scutes lift and curl at the edges. Retained scutes usually mean the turtle isn't getting a proper dry basking period, the water is dirty, or the lighting and diet are off. Fix those and the shed usually tidies itself up. Don't peel or pick at scutes; a soft toothbrush and plain water can gently clean around loose edges.

Algae versus fungus: how to tell

Algae grows on almost every turtle shell kept in a bright tank. Fungus and bacterial infections can look similar at first glance, but they behave very differently.

A little algae is usually harmless, but heavy algae often means too much light on the water, too many nutrients in the tank, or a turtle that isn't drying out. Whenever you're unsure which one you're looking at, take a photo and ask your vet.

Common Challenges & Solutions

Vitamin A deficiency (hypovitaminosis A)

What you see: puffy, swollen eyelids; eyes that stay closed; a turtle that won't eat because it can't see food; sometimes flaky skin or ear swelling. One of the most common, and most preventable, turtle problems. Why: a diet of pellets alone, poor-quality food, or too few leafy greens. What to do: improve the diet right away with dark leafy greens, suitable vegetables and a quality pellet, and keep the water immaculate. Do not self-dose vitamin A. When to call a vet: at the first sign of swollen or closed eyes. Treatment, which may include vet-directed vitamin A and eye care, works best when started early.

Shell rot

What you see: pitted, soft or flaking areas on the shell; white, gray, pink or reddish patches; a bad smell; fluid under the scutes; scutes that lift away. Why: bacteria or fungi enter through a scrape or crack and thrive when the shell stays wet, the water is dirty or there is no dry place to bask. What to do: improve water quality at once, make sure your turtle can leave the water and dry fully every day, and don't pick at the damage. When to call a vet: at the first soft spot, pit or odor. Shell rot can reach the bone and bloodstream.

Respiratory infection

What you see: bubbles at the nose or mouth; wheezing, clicking or open-mouth breathing; a turtle that floats lopsided or struggles to dive; poor appetite; lethargy; eye or nose discharge. Why: cold water, a cold basking spot, drafts, dirty water or stress. What to do: bring water and basking temperatures to target and keep the tank clean while you call your vet. Don't use over-the-counter antibiotics without a diagnosis. When to call a vet: the same day for open-mouth breathing, bubbles or lopsided floating. Pneumonia moves fast in turtles.

Metabolic bone disease (MBD) and soft shell

What you see: a soft, rubbery or flexible shell; a flattened, bumpy or misshapen shell; an overgrown or deformed beak; weak or bowed legs; sluggishness. Why: not enough UVB and/or calcium, so the body can't build strong bone. In aquatic turtles, an old or wrong UVB tube is the most common culprit. What to do: correct the UVB setup right away by confirming tube type, distance and age, replace it if it's past its date, and offer cuttlebone and calcium-rich greens. When to call a vet: as soon as you notice softness. Early MBD can improve with treatment; advanced damage is permanent.

Ear abscess

What you see: a firm, round bulge on one or both sides of the head just behind the eye, where the ear sits under the skin; sometimes a head tilt, reduced appetite or lethargy. Why: a middle-ear infection, often linked to vitamin A deficiency and dirty water. Turtle pus is thick and won't drain on its own. What to do: keep the water clean and warm, correct the diet, and never lance or squeeze it at home. When to call a vet: promptly. Abscesses usually need surgical drainage under veterinary care.

Fungal infections

What you see: white or gray cottony patches on skin or shell, skin peeling in patches, red irritated areas, sometimes a turtle that stops basking. Why: constantly wet skin, dirty or cool water, or no proper dry basking area. What to do: improve dock access and drying time, and correct water quality and temperature; your vet can recommend a safe treatment. When to call a vet: if patches spread, deepen or don't improve within a few days.

Egg binding (dystocia) in females

What you see: a restless female who digs repeatedly, paces or stays out of the water; a swollen belly; lethargy, poor appetite and straining without laying. Why: female turtles can develop and lay eggs even without a male, and the eggs are infertile. Binding happens when there is no suitable nesting spot, the female is too cold or calcium deficient, or an egg is oversized or misshapen. What to do: provide a nesting box of damp sand or soil deep enough to dig in, with a ramp and a warm, quiet setting, and check your UVB and calcium. When to call a vet: if she has dug or strained for 24 hours without laying, or looks unwell. Egg binding can be fatal.

Constipation

What you see: no droppings for several days, a bloated feel, straining, and a sluggish turtle that is eating less. Why: too little fiber, cool water, dehydration, or something swallowed such as gravel. What to do: bring the water into the target range, offer extra aquatic plants and leafy greens, and soak the turtle 15 to 20 minutes in a shallow tub of warm water. Remove any stones or decorations small enough to swallow. When to call a vet: no droppings for a week or more, a swollen belly, or a suspected swallowed object.

Retained scutes

What you see: thick, layered or lumpy shell plates with old scutes stacked and lifting at the edges, dirt or algae trapped beneath, sometimes a faint odor. Why: the shell isn't drying out regularly, the water is dirty, lighting is weak, or nutrition is poor. What to do: check the dock, basking temperatures and UVB, improve water quality, and gently scrub around loose edges with a soft toothbrush. When to call a vet: if the shell beneath looks pitted, soft, discolored or smelly, or the retention is widespread.

Refusing to bask or eat

What you see: a turtle that stays in the water all day, hides, or ignores food for several days. Why: a basking spot that is too hot or too cold, a slippery or steep dock, a tank that's too small, a new environment, or illness. What to do: check every number in this guide, then adjust; reduce noise near the tank, add a hiding spot and offer favorite foods. When to call a vet: more than a week, or any swollen eyes, breathing trouble or weight loss.

Quick reference

Handling & Hygiene

Watching more than holding

Turtles are better to watch than to hold. Most dislike being picked up, and frequent handling stresses them. Handle your turtle for health checks, feeding-tub transfers, tank cleaning and vet visits, and otherwise enjoy it from outside the glass. Children under 5 should not handle turtles or touch the tank at all, and older kids always need an adult nearby and a hand-washing stop afterward.

How to pick up a turtle safely

• Use two hands. Hold the shell at the sides, between the front and back legs, with fingers supporting the plastron (belly shell) if you can.
• Keep the turtle low, over a table, towel or the tank. A dropped turtle can crack its shell.
• Never lift by the tail or legs.
• Mind the head. A scared slider can bite, and its neck is longer than you'd think. Hold from the back and keep fingers away from the front.
• Keep it level and keep it short. A few minutes is plenty.

Musk turtles (stinkpots) release a musky smell when frightened, a polite way of asking to be put down.

The Salmonella routine

Turtles commonly carry Salmonella in their gut and shed it in their droppings. Because turtles share their water with their waste, the tank, the water, the dock and everything that touches them can carry it too. A turtle with Salmonella looks perfectly healthy, which is exactly the problem. The bacteria can cause diarrhea, fever and cramps in people, and the risk is highest for children under 5, pregnant people, older adults and anyone with a weakened immune system. A few simple habits make a turtle a safe household pet for most families.

1. Wash your hands with soap and warm water for at least 20 seconds after touching the turtle, its tank, the water or any equipment. Every time.
2. Never clean the tank or its parts in the kitchen sink. Use a utility sink, laundry tub or bathtub, or work outside, and disinfect the area afterward.
3. Use dedicated equipment. Keep a bucket, siphon, sponge and brush for the turtle only, stored away from food and dishes.
4. Keep the tank out of the kitchen.
5. Don't kiss or snuggle your turtle, and keep it away from your face and mouth.
6. Don't eat or drink while handling the turtle or tank, and don't let it roam the house.
7. Supervise children and help them wash up every time. Keep children under 5 from touching the turtle or the tank.
8. Dispose of tank water carefully. Pour it down a toilet or utility drain, never a kitchen sink, and never onto a vegetable garden.

Millions of families keep turtles safely every day. Consistency matters more than perfection, and the best routine is the one you actually follow.

Routine Care Calendar

When to See a Vet

Turtles are masters at hiding illness. By the time something shows, it has often been building for weeks. When you're unsure, call. A five-minute call with a reptile vet beats a week of watching and hoping.

Go today (same-day or emergency):

• Open-mouth breathing, wheezing, bubbles at the nose or mouth, or floating lopsided or unable to dive
• Eyes swollen shut and no food eaten for days
• A female digging or straining for 24 hours or more without laying
• A cracked or broken shell, exposed tissue, or bleeding that doesn't stop quickly
• Any tissue protruding from the vent (keep it moist and call at once)
• A turtle that is limp, unresponsive or cannot hold its head up
• Shell rot with deep pits, bleeding or fluid under the scutes
• A suspected swallowed object such as a stone, hook or string

Book within a few days:

• A soft or rubbery shell, or the first signs of deformity
• A firm bulge behind one or both eyes
• White cottony patches or spreading skin lesions
• No droppings for a week or more
• Refusal to bask for more than a week, or progressive appetite or weight loss
• Stacked scutes with pitting, discoloration or odor beneath
• Any sudden behavior change you can't explain

Find your reptile veterinarian now, before you need one. Ask whether they treat aquatic turtles and what their after-hours plan is. Bring a photo of your setup, a written log of temperatures and water tests, your diet list, and a fresh stool sample in a sealed bag if you can. Transport your turtle in a ventilated, lidded container with a damp towel, and keep it warm.

FAQ

How big a tank does a red-eared slider need?

An adult red-eared slider needs roughly 75 to 125 gallons or more, and bigger is better. The usual rule of thumb is about 10 gallons of water per inch of shell length, so a 10-inch female lands near 100 gallons. Keep the water about 1.5 to 2 times the turtle's shell length deep so it can swim freely and flip over if it lands on its back. Hatchlings can start in a 20–40 gallon tank, but that is a temporary stage, and many keepers go straight to a larger tank so there is nothing to outgrow. A large stock tank or a warm-weather outdoor pond is a great option for adults.

How long do red-eared sliders live?

Red-eared sliders commonly live 20 to 30 years or more with good care, and other aquatic turtles can reach 40. That is longer than most dogs, cats or horses. The best ways to reach the upper end are a properly sized tank, strong filtration, clean water, correct heat and UVB, a varied diet, and regular visits to a reptile vet. Think of your turtle as a lifelong family member, and plan for who will care for it if your circumstances change.

What do aquatic turtles eat?

Aquatic turtles are omnivores. A healthy diet is built on quality commercial turtle pellets (about one third), plus leafy greens and aquatic plants such as dandelion, romaine and anacharis, plus occasional protein such as shrimp, earthworms, insects and snails. Juveniles lean carnivorous, at roughly 50% protein, while adults shift toward more plants. A cuttlebone provides calcium. Avoid iceberg lettuce, dairy, processed human food, raw meat from your kitchen and pellets as the only food, and be careful with wild-caught feeders because of parasites.

Do aquatic turtles need a basking light?

Yes, absolutely. A turtle has to climb completely out of the water, warm up and dry off entirely every day. The basking surface should reach 90 to 95°F, with air above it around 85 to 90°F, on a dock large enough for the whole body. A basking lamp supplies warmth but is not a substitute for UVB, so you also need a linear 5.0/10.0 or T5 HO UVB tube, replaced every 6 to 12 months, so your turtle can make vitamin D3 and keep its shell and bones strong. Without warmth, UVB and a dry dock, turtles develop shell rot, respiratory infections and metabolic bone disease.

What temperature should turtle water be?

Keep the water at 75 to 80°F for most aquatic turtles, and a little warmer, about 78 to 82°F, for hatchlings. A guarded submersible heater on a thermostat holds that range, and a reliable thermometer lets you check it daily. Water that is too cold slows digestion, reduces appetite and weakens the immune system, which invites respiratory infections. Water that is too warm stresses your turtle and speeds up bacterial growth.

Why are my turtle's eyes swollen?

Swollen, puffy or closed eyes are most often a sign of vitamin A deficiency (hypovitaminosis A), which is very common in turtles fed mostly pellets or low-quality food, though dirty water, infection or a foreign object in the eye can also be involved. A turtle with swollen eyes may stop eating because it can't see its food. Improve the diet with dark leafy greens and a quality pellet, keep the water spotless, and see a reptile vet promptly. Don't give vitamin A supplements on your own, because too much is harmful and your vet will choose the right dose and treatment.

Can I keep a turtle in a tank without a filter?

It isn't a good idea. Turtles produce a large amount of waste for their size, and without strong filtration, ammonia and bacteria build up quickly and cause skin, eye and shell problems. We recommend a canister filter rated for two to three times your actual tank volume, plus about 25% weekly water changes with dechlorinated water. Some keepers get by with frequent, large water changes and no filter, but that is time-consuming, hard on the turtle and rarely sustainable for years.

How often do you feed a turtle?

Feed juveniles once a day and adults every two to three days, offering only what they finish in about 5 to 10 minutes. Overfeeding is one of the most common mistakes, since turtles will happily beg for more than they need and extra food fouls the water. Many keepers feed in a separate tub of warm water to keep the main tank cleaner. If your turtle seems thin, talk to your vet rather than simply adding more food.

Can I release my pet turtle outside?

No. Never release a pet turtle outdoors. Red-eared sliders are an invasive species in many parts of the world, and released pets compete with native turtles for food and basking sites, spread disease and disrupt local ecosystems. Pet turtles often can't survive in the wild either, and in many places releasing one is illegal. If you can't keep your turtle, contact a reptile rescue, a herpetological society or a reptile vet for help rehoming it responsibly.

Do pet turtles carry salmonella?

Yes. Turtles commonly carry Salmonella bacteria in their intestines and shed them in their droppings with no signs of illness. It can cause serious illness in people, and the risk is highest for children under 5, pregnant people, older adults and anyone with a weakened immune system. The solution is consistent hygiene: wash your hands with soap and warm water for at least 20 seconds after any contact with the turtle, its tank or its water; never wash tank parts in a kitchen sink; keep turtles out of food areas; and don't kiss or snuggle them. With those habits, most families keep turtles safely for decades.

Ready to shop? Start with Reptiles & Amphibians. 10% of every purchase supports no-kill animal shelters. Not sure this is the right pet? Compare your options in our Reptile Guide.

Every Purchase Gives Back

Before we earn a dime, 10% of every purchase at Walnut Creek Supply goes to no-kill animal shelters across the country. Not a checkout option, not a promotion. Off the top of every order, every day, because we believe responsible pet ownership and caring for our communities are the same promise made in two directions.

For turtle keepers, that promise means something specific. Turtles are among the most commonly surrendered and abandoned reptiles, and nearly every one of those stories begins with a tiny shell and an owner who didn't know what came next. By reading this guide, you've done the hardest part: you understand the adult. If you're in a position to adopt rather than shop, reptile rescues across the country have healthy, grown turtles waiting for someone with a big tank, a good filter and a thirty-year plan.

We're a family business in Christiana, Lancaster County, Pennsylvania. We grow our own food, keep our own animals, and stock the clean-label, USA-made goods we'd put in front of our own pets. That means no mystery ingredients and Clean Fuel, No Junk, every time. If you have a question about your turtle's filter, lighting, diet or where to find a reptile vet, call us at (717) 983-8069. We'd rather talk it through with you.

Welcome to the next 20 to 40 years with one of the most rewarding animals in the aquarium hobby.

_From our family to yours,_ Walnut Creek Supply — Christiana, Lancaster County, Pennsylvania _walnutcreeksupply.com_

How big a tank does a red-eared slider need?

An adult red-eared slider needs roughly 75 to 125 gallons or more, and bigger is better. The usual rule of thumb is about 10 gallons of water per inch of shell length, so a 10-inch female lands near 100 gallons. Keep the water about 1.5 to 2 times the turtle's shell length deep so it can swim freely and flip over if it lands on its back. Hatchlings can start in a 20–40 gallon tank, but that is a temporary stage, and many keepers go straight to a larger tank so there is nothing to outgrow. A large stock tank or a warm-weather outdoor pond is a great option for adults.

How long do red-eared sliders live?

Red-eared sliders commonly live 20 to 30 years or more with good care, and other aquatic turtles can reach 40. That is longer than most dogs, cats or horses. The best ways to reach the upper end are a properly sized tank, strong filtration, clean water, correct heat and UVB, a varied diet, and regular visits to a reptile vet. Think of your turtle as a lifelong family member, and plan for who will care for it if your circumstances change.

What do aquatic turtles eat?

Aquatic turtles are omnivores. A healthy diet is built on quality commercial turtle pellets (about one third), plus leafy greens and aquatic plants such as dandelion, romaine and anacharis, plus occasional protein such as shrimp, earthworms, insects and snails. Juveniles lean carnivorous, at roughly 50% protein, while adults shift toward more plants. A cuttlebone provides calcium. Avoid iceberg lettuce, dairy, processed human food, raw meat from your kitchen and pellets as the only food, and be careful with wild-caught feeders because of parasites.

Do aquatic turtles need a basking light?

Yes, absolutely. A turtle has to climb completely out of the water, warm up and dry off entirely every day. The basking surface should reach 90 to 95°F, with air above it around 85 to 90°F, on a dock large enough for the whole body. A basking lamp supplies warmth but is not a substitute for UVB, so you also need a linear 5.0/10.0 or T5 HO UVB tube, replaced every 6 to 12 months, so your turtle can make vitamin D3 and keep its shell and bones strong. Without warmth, UVB and a dry dock, turtles develop shell rot, respiratory infections and metabolic bone disease.

What temperature should turtle water be?

Keep the water at 75 to 80°F for most aquatic turtles, and a little warmer, about 78 to 82°F, for hatchlings. A guarded submersible heater on a thermostat holds that range, and a reliable thermometer lets you check it daily. Water that is too cold slows digestion, reduces appetite and weakens the immune system, which invites respiratory infections. Water that is too warm stresses your turtle and speeds up bacterial growth.

Why are my turtle's eyes swollen?

Swollen, puffy or closed eyes are most often a sign of vitamin A deficiency (hypovitaminosis A), which is very common in turtles fed mostly pellets or low-quality food, though dirty water, infection or a foreign object in the eye can also be involved. A turtle with swollen eyes may stop eating because it can't see its food. Improve the diet with dark leafy greens and a quality pellet, keep the water spotless, and see a reptile vet promptly. Don't give vitamin A supplements on your own, because too much is harmful and your vet will choose the right dose and treatment.

Can I keep a turtle in a tank without a filter?

It isn't a good idea. Turtles produce a large amount of waste for their size, and without strong filtration, ammonia and bacteria build up quickly and cause skin, eye and shell problems. We recommend a canister filter rated for two to three times your actual tank volume, plus about 25% weekly water changes with dechlorinated water. Some keepers get by with frequent, large water changes and no filter, but that is time-consuming, hard on the turtle and rarely sustainable for years.

How often do you feed a turtle?

Feed juveniles once a day and adults every two to three days, offering only what they finish in about 5 to 10 minutes. Overfeeding is one of the most common mistakes, since turtles will happily beg for more than they need and extra food fouls the water. Many keepers feed in a separate tub of warm water to keep the main tank cleaner. If your turtle seems thin, talk to your vet rather than simply adding more food.

Can I release my pet turtle outside?

No. Never release a pet turtle outdoors. Red-eared sliders are an invasive species in many parts of the world, and released pets compete with native turtles for food and basking sites, spread disease and disrupt local ecosystems. Pet turtles often can't survive in the wild either, and in many places releasing one is illegal. If you can't keep your turtle, contact a reptile rescue, a herpetological society or a reptile vet for help rehoming it responsibly.

Do pet turtles carry salmonella?

Yes. Turtles commonly carry Salmonella bacteria in their intestines and shed them in their droppings with no signs of illness. It can cause serious illness in people, and the risk is highest for children under 5, pregnant people, older adults and anyone with a weakened immune system. The solution is consistent hygiene: wash your hands with soap and warm water for at least 20 seconds after any contact with the turtle, its tank or its water; never wash tank parts in a kitchen sink; keep turtles out of food areas; and don't kiss or snuggle them. With those habits, most families keep turtles safely for decades.