Leopard Gecko Water & Hydration Guide
| Water dish depth | No deeper than the belly |
| Refresh frequency | Daily |
| Dehydration signs | Sunken eyes, wrinkled skin, stuck shed |
How leopard geckos drink
Unlike some geckos that rely mainly on licking droplets off surfaces, leopard geckos will drink directly from a shallow dish, which is why one should always be available rather than relying solely on misting.
Dish setup
Keep the dish shallow — no deeper than the gecko's belly — to avoid a drowning risk, place it on the cooler side of the enclosure to slow evaporation, and refresh the water daily even if it looks clean, since geckos often walk through or defecate in dishes.
Signs of dehydration
Sunken eyes, loose or wrinkled skin that doesn't spring back when gently pinched, dry or flaky skin, and repeated stuck or incomplete sheds are the main indicators. Chronic low ambient humidity is a common underlying cause.
If a gecko seems dehydrated
Verify the water dish is accessible and being refreshed, check ambient humidity is in the 30–40% range, and consider a brief, shallow lukewarm soak. Persistent dehydration despite correct husbandry warrants a vet visit.
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A single adult leopard gecko needs a 20-gallon long tank as an absolute minimum, with a 36x18 in (40-gallon breeder) footprint now considered the recommended standard — plus a secure lid, an under-tank heater on a thermostat, a thermal gradient, at least three hides, and a shallow water dish.
Set up in this order: substrate, then heat source wired through a thermostat, then hides and water dish, then decor — and run the whole enclosure for at least 24–48 hours to confirm stable temperatures before your gecko moves in.
Hatchlings can start in a 10-gallon tank or tub, juveniles do well in 20 gallons, and adults need a 20-gallon long as an absolute minimum — with 36x18 in (40-gallon breeder) now the widely recommended standard, not just an upgrade.
Heat a leopard gecko enclosure with an under-tank heater and/or overhead heat source (halogen or deep heat projector) wired through a thermostat — a thermostat is mandatory, not optional, and heat rocks should never be used.
Leopard geckos can survive without UVB using dietary D3 supplementation, but current husbandry guidance now recommends low-level UVB (roughly 2–6% T5) as best practice — it improves D3 synthesis, bone density, and natural behavior, and views on it have shifted significantly from older nocturnal-species advice.
Keep ambient humidity around 30–40% across most of the enclosure, with a dedicated humid hide raised to roughly 70–80% to support smooth, complete sheds.