Leopard Gecko Care Basics: The Beginner-Friendly Reptile

Leopard geckos are the gateway reptile for a reason. They live 15 to 20 years, tolerate handling once they trust you, eat a simple insect diet, fit comfortably in a 40-gallon enclosure on a regular shelf, and forgive the kinds of beginner mistakes that would kill more demanding species. They are not, however, a “set it and forget it” pet, and the recommendations from older care sheets are now considered outdated. This guide reflects the modern husbandry consensus from veterinary reptile specialists and large breeders, which differs in important ways from what you might read on a 2008 forum post.

Enclosure: bigger than older guides suggest

The standard recommendation through the 2010s was a 20-gallon long tank. The current consensus is double that.

• Minimum size for one adult: 36 x 18 x 16 inches (40-gallon breeder).
• Better: 48 x 18 x 18 inches.
• Hatchling temporary: A 10-gallon for the first 8 to 12 weeks, then upgrade.

Leopard geckos are terrestrial, so floor space matters more than height. Front-opening PVC enclosures (Custom Cages, Animal Plastics, or budget options like the Reptile Habitat Pro line) hold heat better and reduce stress from top-down handling. A glass aquarium with a screen top works but loses heat fast.

The enclosure needs a clear hot and cool side. Place the heat source on one end, leave the other end unheated, and the gecko will move between them throughout the day to thermoregulate.

Heating: belly heat, not basking lamps

Leopard geckos are unique among common pet reptiles in that they primarily absorb heat through their bellies rather than basking under a heat lamp. They evolved in arid Pakistan and Afghanistan where they hide in burrows during the day and emerge onto sun-warmed rocks at dusk.

The modern setup:

• Primary heat: An under-tank heating pad (Ultratherm or Vivarium Electronics) covering one-third of the floor on the hot side. Connect it to a thermostat (Inkbird ITC-308 is the budget standard, Herpstat is the premium option). Without a thermostat, heat mats can climb past 110F and burn the gecko.
• Surface temperature on the warm hide: 88 to 92F.
• Ambient air temperature on the cool side: 72 to 78F.
• Nighttime: Drop to 65 to 72F. No supplemental heat needed unless the room dips below 65F.

The older advice to also use an overhead “basking” bulb is increasingly out of favor because the bulbs dry out the enclosure and create temperature gradients that conflict with the heat mat. A heat mat plus a low-output UVB tube is the cleaner setup.

UVB: the new consensus

For 30 years, leopard geckos were kept without UVB lighting and most lived to old age. Newer research has shifted the consensus toward providing low-level UVB because of measurable improvements in bone density, immune function, and natural behavior.

Use a low-output UVB tube:

• Arcadia Shadedweller 7 percent T5 HO, or
• Zoo Med Reptisun 5.0 T5 HO

Position 10 to 12 inches above the warm hide. UVB exposure should be optional, meaning the gecko can retreat into a fully shaded hide whenever it wants. Replace the bulb every 12 months.

If you skip UVB entirely, increase calcium-with-D3 supplementation frequency (see diet section) and you can still raise a healthy gecko, but the gold standard now includes the tube.

Hides and substrate

Leopard geckos need at least three hides:

• Warm dry hide on the hot side. Use a half-log, ceramic cave, or commercial reptile cave.
• Cool dry hide on the cool side. Same materials.
• Humid hide in the middle, filled with damp sphagnum moss or coconut fiber. This is critical for shedding and for hydration. Mist it every other day to maintain humidity inside.

For substrate, the safe options are:

• Slate tile: Easy to clean, holds heat, cannot be ingested.
• Non-adhesive shelf liner: Cheap, replaceable, safe.
• A bioactive 70/30 topsoil/sand mix at 3 to 4 inches deep: Allows natural digging behavior, but only for experienced keepers comfortable with parasite management.

Avoid loose substrates labeled “calci-sand” or “reptile sand” entirely. They are sold for leopard geckos and are the leading cause of impaction in juveniles.

Diet: insects, no exceptions

Leopard geckos are strict insectivores. They do not eat fruit, vegetables, or commercial pellets. Anyone selling “leopard gecko food” in a jar is selling you a useless product.

Staple insects in rotation:

• Dubia roaches: Best overall. High protein, low chitin, do not smell, easy to gut-load.
• Crickets: Cheap, widely available, but loud and short-lived in storage.
• Mealworms: Acceptable as part of a rotation, but high chitin makes them harder to digest. Not a sole-staple option.

Occasional treats:

• Hornworms: Very high water content, great for hydration, low calcium.
• Superworms: Fine for adults, too large for juveniles.
• Black soldier fly larvae: Naturally calcium-rich.

Avoid:

• Wax worms: Dessert only. Very fatty, addictive (geckos can refuse other foods after wax worms).
• Wild-caught insects: Pesticide and parasite risk.

Feeding schedule:

Age	Frequency	Quantity
0 to 4 months	Daily	As many as eaten in 15 minutes
4 to 12 months	Every other day	5 to 8 medium insects
Adult (12+ months)	Every 2 to 3 days	4 to 6 large insects

Supplementation

This is non-negotiable. Dust insects with:

• Calcium without D3: Every other feeding (if you have UVB).
• Calcium with D3: 2 to 3 times a week (if you skip UVB) or once a week (if you have UVB).
• Multivitamin (Repashy Calcium Plus or Arcadia EarthPro): Once a week.

Leave a small dish of plain calcium powder in the enclosure. Geckos self-regulate intake.

Handling and behavior

Leopard geckos are one of the few reptile species that genuinely tolerate handling. Start at week 2 after acclimation with 5-minute sessions every other day, building to 15 minutes a few times a week. Support the body from below, never grab the tail (it can drop and grow back smaller and discolored), and let the gecko walk between your hands rather than holding it tightly.

Normal behaviors:

• Tail waving slowly: hunting alert
• Tail rattling rapidly: defensive warning, give it space
• Licking your hand: scent investigation, not affection but a sign of curiosity
• Soaking in the water dish: prep for an upcoming shed

Concerning behaviors:

• Refusing food for more than 2 weeks (outside winter slowdown)
• Stuck shed on toes (cuts off circulation, requires gentle removal with a warm soak)
• Weight loss visible at the tail base (the tail is the fat reserve)

A correctly set up leopard gecko enclosure runs itself for weeks at a time. Spot-clean waste daily, do a full substrate change every 2 to 3 months for tile setups, feed and supplement on schedule, and you have one of the easiest, longest-lived reptile companions available. Most of what differentiates a happy 18-year-old gecko from a sickly 4-year-old is the boring fundamentals done consistently from week one.

Frequently asked questions

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