Leopard Gecko Care Sheet: Setup, Diet, and Heat Basics

What Does Leopard Gecko Care Actually Involve?

Leopard gecko care comes down to five things done right: an enclosure of at least 36" x 18" x 18" for an adult, a thermostat-controlled heat source creating a warm basking area around 90-95°F with a cool side in the low-to-mid 70s, dry ambient humidity of roughly 30-40% plus a humid hide for shedding, a varied diet of gut-loaded insects dusted with calcium and vitamins, and low-stress handling once the animal has settled in. Get those five right and the leopard gecko (Eublepharis macularius) is one of the most forgiving lizards in the hobby — a hardy, ground-dwelling insect-eater that routinely lives 15-20 years in good care.

That lifespan is the number worth sitting with before you buy. A leopard gecko is a longer commitment than most dogs. The rest of this guide walks through the setup, heat, diet, and humidity details one at a time, with honest ranges rather than single magic numbers — and clear flags for the moments that belong to an exotic vet, not a website.

Leopard Gecko Basics at a Glance

Two traits shape everything else in their care. First, they are ground-dwellers from rocky, dry habitat, so floor space matters far more than height, and ambient humidity should stay low. Second, they are crepuscular, not sun-baskers — which changes how you approach lighting compared with a day-active lizard.

Leopard Gecko Tank Setup

Enclosure size

For a single adult, treat 36" x 18" x 18" — roughly a 40-gallon footprint — as the sensible minimum, with bigger always better. You will still see 20-gallon tanks recommended in older care sheets; a gecko can survive in one, but it cannot hold a proper temperature gradient as well, and current keeping practice has moved on. Juveniles can go straight into the adult enclosure — just add clutter so a small gecko feels covered.

Do not house two males together; they will fight. Even female pairs can quietly bully each other over food and hides, so for a first keeper, one gecko per enclosure is the low-risk choice.

Hides: you need at least three

Hides are not decor — they are how a gecko regulates its temperature and stress. The minimum set:

• Warm hide — directly in the heated zone, so the gecko can be both hidden and warm.
• Cool hide — on the opposite end, for cooling off without feeling exposed.
• Humid hide — a covered box with damp sphagnum moss or paper towel, placed toward the warm end. This is where shedding problems are prevented.

Add cork bark, low rock stacks, and artificial or hardy live plants so the gecko can cross the enclosure without open exposure.

Substrate

• Paper towel or textured tile — the safe defaults: easy to clean, zero ingestion risk, ideal for quarantine, juveniles, and any gecko recovering from illness.
• A firm sand-soil mix — many experienced keepers use a naturalistic blend (commonly around 60-70% organic topsoil to 30-40% play sand) with adult, healthy geckos. It holds burrows and looks like their native habitat.
• Avoid loose calcium sand, crushed walnut, and reptile carpet. Calcium sand encourages deliberate ingestion and is implicated in impaction; carpet snags teeth and toes and harbors bacteria.

If a gecko on loose substrate strikes sloppily at prey, feed from a dish or tongs.

Leopard Gecko Heating Setup

Heat is the area where errors do the most damage, because digestion, immunity, and appetite all depend on it. The goal is a gradient — a warm zone and a cool retreat — never a uniformly warm box.

Target temperatures

These are honest ranges, not precision targets — verify with your own measurements. Use a digital thermometer with a probe (or an infrared temp gun for surfaces). Stick-on analog dials are unreliable enough to be dangerous.

Heat sources and the non-negotiable thermostat

• Overhead heat (halogen flood lamp or deep heat projector) is the approach most current guidance favors, because it warms both the surface and the air above it, the way sun-warmed rock does.
• Under-tank heat mats are the traditional option and still workable, especially paired with a thin substrate layer — but a mat alone may leave air temperatures too cool in a cold room.
• Every heat source goes on a thermostat. No exceptions. An unregulated heat mat can reach burn-inducing temperatures, and an unregulated lamp can cook an enclosure. A dimming or pulse thermostat with its probe at the basking zone is cheap insurance on a 15-year animal.

Avoid heat rocks entirely — they have a long track record of burns. If your room stays above roughly 68°F at night, you likely need no night heat at all; leopard geckos tolerate and arguably benefit from a mild nighttime drop.

If you also keep a day-basking species, do not transfer numbers between animals — a bearded dragon's basking surface runs far hotter than a leopard gecko's, which is exactly why our bearded dragon tank setup guide treats its temperatures as a separate conversation.

Lighting and UVB

Leopard geckos are crepuscular and were long kept successfully without UVB, using dietary vitamin D3 instead. Current evidence-informed practice has shifted toward providing low-level UVB as a benefit, not a strict requirement: a low-output UVB lamp over the warm side, giving the gecko the option to self-regulate its exposure, supports natural vitamin D3 synthesis.

The workable positions today:

• UVB provided: low-intensity UVB on a 10-12 hour day cycle, plus calcium dusting, with D3-containing supplement used more sparingly.
• No UVB: every feeding dusted appropriately with a calcium + D3 supplement, on a consistent schedule.

Both can produce healthy geckos; the failure mode is mixing them up — no UVB and no D3 is how metabolic bone disease starts. Bulb choice, distance, and replacement schedules matter more than brand marketing suggests, so read our full species-by-species UVB guide before buying a lamp. Either way, provide a clear day-night light cycle; a dark hide should always be available.

Leopard Gecko Humidity

Leopard geckos want a dry enclosure with one humid microclimate:

• Ambient humidity: roughly 30-40%, measured with a digital hygrometer. Brief swings outside that range are normal; sustained high humidity in a dry-species setup invites respiratory and skin problems.
• Humid hide: always available, kept moist with damp sphagnum moss. The gecko will use it heavily around sheds.

If your home runs humid, improve ventilation (screen top, drier substrate) rather than adding heat to "burn off" moisture. If it runs desert-dry, the humid hide does the work — do not mist the whole enclosure. And keep species boundaries firm here: the 60-70%+ humidity a ball python needs would be chronically wrong for a leopard gecko, a contrast our ball python humidity guide makes clear from the other direction.

What Do Leopard Geckos Eat?

Leopard geckos are strict insectivores. No fruit, no vegetables, no commercial "gecko diets" formulated for fruit-eating species.

Good staple feeders

• Crickets — nutritious and stimulating to hunt; remove uneaten ones after feeding.
• Dubia roaches — excellent nutrition, easy to keep, can't jump or climb smooth surfaces.
• Black soldier fly larvae — naturally calcium-rich.
• Mealworms — acceptable as part of a rotation, though fattier and chitin-heavy; better as a component than the whole diet.
• Treats only: waxworms and butterworms are the candy of the feeder world — occasional, not weekly staples.

Size prey to your gecko: a common rule of thumb is insects no longer than the space between the gecko's eyes.

Gut-loading and dusting

Feeder insects are only as nutritious as what they ate. Gut-load feeders for 24-48 hours before offering them — fresh vegetables and a quality gut-load diet. Then dust with supplements: calcium at most feedings (with or without D3 depending on your UVB setup, as above) and a multivitamin roughly once weekly. Supplement brands vary in strength, so follow your product's label and, when in doubt, ask a reptile vet rather than doubling up on D3, which can be oversupplemented.

How often to feed

• Juveniles (under ~12 months): every day or every other day — they are growing fast.
• Adults: every 2-3 days is typical.
• Watch the tail: a healthy leopard gecko stores fat in its tail, which should look plump — noticeably wider than the neck. A rapidly thinning tail is a warning sign worth a vet visit, not a bigger feeder order.

Fresh water in a shallow dish, always available, changed regularly.

Shedding, Handling, and Health Warning Signs

Shedding: geckos turn dull and grayish, then shed in patches and usually eat the skin. Your job is simply a functioning humid hide. Afterward, check the toes and tail tip — retained shed there can constrict and cost the animal a toe. Persistent stuck shed after a soak on damp paper towel is a vet-or-experienced-help situation, not something to pull off dry.

Handling: give a new gecko one to two weeks to settle before regular handling. Scoop from the side, support the whole body, keep sessions short, and stay low over a soft surface. Never grab or restrain the tail — leopard geckos can drop their tails as a defense. It regrows, but stubbier, and the fat reserve is lost.

See an exotic or reptile vet for: refusal of food beyond a couple of weeks in an otherwise correct setup, a thinning tail, soft or rubbery jaw, trembling or difficulty walking (possible metabolic bone disease), swollen belly with straining (possible impaction), wheezing or mucus, or lethargy that doesn't track with a shed cycle. These are medical issues; no care sheet, including this one, substitutes for a vet who can examine your animal.

Quick Setup Checklist

• Enclosure at least 36" x 18" x 18" for an adult
• Overhead heat source on a thermostat; basking surface 90-95°F, cool side low-to-mid 70s
• Digital probe thermometer and hygrometer — never stick-on dials
• Three hides minimum: warm, cool, humid (damp sphagnum)
• Low-level UVB or a disciplined calcium + D3 schedule — never neither
• Ambient humidity around 30-40%
• Gut-loaded, dusted insects; juveniles fed daily-ish, adults every 2-3 days
• Shallow water dish, cleaned regularly
• The name of the nearest exotic vet saved before you need it

Verify every number here against your own measurements and your specific animal — ranges are a starting point, and your thermometer outranks any care sheet, including this one.