As a veterinarian who treats a fair number of reptiles, I can tell you that one of the simplest and most overlooked parts of tortoise care is the humble soak. Tortoises, especially hatchlings and juveniles, are far more prone to dehydration than most owners realize. They do not always drink from a water dish reliably, and chronic low-grade dehydration is a quiet driver of many problems I see in practice, from kidney stress to shell deformities and bladder stones.
The good news is that soaking is easy, inexpensive, and genuinely effective. A few minutes in a shallow tub of warm water lets your tortoise drink, absorb moisture, and pass waste, all of which keep its kidneys and bladder working properly. In this guide I will walk you through exactly how to soak a tortoise safely, what supplies you need, the step-by-step routine I recommend to clients, and the mistakes that can turn a helpful soak into a stressful or even dangerous experience.
What You Will Need
You do not need anything fancy to soak a tortoise. Most of these items are already around the house, and the setup takes only a couple of minutes. The goal is a shallow, warm, escape-proof bath with good footing so your tortoise feels secure.
- A shallow plastic tub, storage bin, or basin with low sides your tortoise cannot climb over.
- Lukewarm water at roughly 85 to 90 degrees Fahrenheit (29 to 32 degrees Celsius).
- A simple thermometer to check water temperature accurately.
- A textured towel, paper towel, or non-slip mat for the bottom so the tortoise does not slide.
- A warm, draft-free spot to do the soak so your tortoise does not get chilled.
- A second towel to dry and warm your tortoise afterward.
- A clean container used only for soaking, never shared with food prep areas.
A note on hygiene: tortoises commonly defecate during a soak, and reptile waste can carry Salmonella. Use a dedicated tub, wash it separately, and always wash your hands well afterward.
Step by Step: How to Soak a Tortoise
Here is the routine I recommend to my reptile clients. Take your time and stay nearby for the entire soak. A tortoise should never be left unattended in water, even shallow water.
Prepare the tub and water
Place a non-slip mat or textured towel in the bottom of the tub. Fill it with lukewarm water at about 85 to 90 degrees Fahrenheit. The water should reach the line where the top and bottom shell meet, roughly the lower third of the shell, and never higher than where the head joins the body.
Check the temperature
Test the water with a thermometer or the inside of your wrist before placing your tortoise in. It should feel comfortably warm, not hot and not cool. Cold water chills a tortoise quickly and can make it sluggish.
Gently place your tortoise in
Lower your tortoise into the water slowly and set it down on the non-slip surface. Make sure its head can comfortably reach above the waterline. Many tortoises start drinking within the first few minutes, sometimes dipping their head down to take in water.
Let it soak for 15 to 30 minutes
Stay close and supervise. Your tortoise may walk around, drink, rest, or pass waste. All of this is normal and beneficial. If the water cools noticeably, you can add a little warm water carefully, keeping it well below the head.
Dry and rewarm
Lift your tortoise out, pat it dry with a clean towel, and return it to a warm enclosure under its basking lamp. This helps it dry off, raise its body temperature, and stay comfortable. Clean and disinfect the tub afterward.
Common Mistakes to Avoid
Most soaking problems come down to a few avoidable errors. I see these regularly, and each one can make a soak ineffective or genuinely risky for your tortoise.
Filling the water too deep is the single most dangerous mistake. Tortoises are not strong swimmers, and water above the head-shell junction creates a real drowning risk, particularly for hatchlings. Other common errors include using water that is too cold (which chills the tortoise and slows its system), leaving the tortoise unattended, soaking on a cold floor or in a drafty room, and rushing the soak so the tortoise does not have time to drink. Avoid adding soap, oils, or any chemicals, and never leave a wet tortoise to cool down without rewarming it under its lamp.
Tips for Success
A few small adjustments make soaks calmer and more productive. These are the tips I share most often with first-time tortoise keepers who want the routine to actually work.
Soak in the morning when your tortoise is naturally more active and likely to drink, then return it to a warm basking area to dry and digest. Keep the routine consistent so it becomes predictable and less stressful. For nervous tortoises, start with shorter 10 to 15 minute soaks and build up. Watch what happens during the soak, since it doubles as a quick health check: note whether your tortoise is drinking, passing normal urates and stool, and moving comfortably. Increase soaking frequency during shedding, hot dry weather, after illness, or any time you suspect dehydration. Always use water only, never additives.
When to Get Professional Help
Soaking is supportive care, not a cure for illness. If your tortoise shows signs that go beyond normal hydration needs, it is time to involve a reptile-experienced veterinarian rather than relying on soaks alone.
Contact your vet if you notice persistent thick, white, gritty, or bloody urates, no urination over several days despite regular soaks, sunken eyes, lethargy, loss of appetite, straining without passing waste, or repeated signs of constipation. These can point to dehydration, bladder stones, kidney problems, or other conditions that need diagnosis and treatment. A tortoise that refuses to drink, feels unusually light for its size, or has a soft or deformed shell should also be seen.
When in doubt, reach out to a qualified reptile vet. Soaking helps maintain hydration, but it cannot replace a proper exam when something is wrong. If you ever suspect your tortoise has ingested something toxic, contact your veterinarian or the ASPCA Animal Poison Control Center at 888-426-4435.
Safety note: Never leave a tortoise unattended in water and keep the level below the head-shell junction, since even shallow water poses a drowning risk to these poor swimmers.