Reptiles

Leopard Gecko Tank Setup: Size, Heat, Hides & Substrate

QUICK ANSWER
A leopard gecko tank setup needs a 20-gallon long enclosure, an under-tank heater on a thermostat set to 88-92°F, three hides (warm, moist, cool), and no UVB required for survival though a low-output bulb improves long-term health.

Leopard Gecko Tank Setup: The Crepuscular Keeper's Reptile

The leopard gecko tank setup is one of the most forgiving in reptile keeping, which is why this species earns its reputation as the best beginner lizard. Before your leopard gecko comes home, get the heat working and test it for 48 hours straight.

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Adults need a 20-gallon long tank (30x12x12 inches) at minimum. The "long" shape matters because footprint is more important than height for ground-dwelling species.

Leopard Gecko Temperature Zones: 88-92°F Belly Heat Is the Core Requirement

The leopard gecko is crepuscular, most active at dusk and dawn, and relies on belly contact with warm surfaces rather than basking under overhead lamps like Pogona vitticeps.

The warm side floor surface must reach 88-92°F measured with a digital probe or IR gun at floor level. The cool side sits at 72-78°F.

Ambient air temperature ranges from 75-85°F across the enclosure.

  • Warm floor surface: 88-92°F (under the warm hide, measured with probe)
  • Cool side floor: 72-78°F
  • Ambient air: 75-85°F
  • Nighttime minimum: 65°F (UTH handles this automatically)
WARNING
Never run a UTH without a thermostat. An unregulated UTH reaches 105°F or higher and causes severe thermal burns to the ventral scales. The thermostat probe must sit between the mat and the tank floor, not on top of the glass.

The Three-Hide Rule: Every Leopard Gecko Needs All Three

A leopard gecko without proper hides will stress, stop eating, and develop immune problems within weeks. The three-hide system is not optional decoration.

The warm hide sits directly over the UTH. The cool hide goes on the opposite end.

The moist hide, filled with damp sphagnum moss or coco coir, belongs on the warm side and is critical for clean sheds. Paper towel and ceramic tile both sit flush under hide interiors without the uneven surface issues that loose substrate creates.

  • Warm hide: Over the UTH, just big enough for the gecko to turn around
  • Cool hide: Far end from heat source, same snug sizing
  • Moist hide: Warm side, packed with damp sphagnum moss, entrance on the side
CARE TIP
Change the sphagnum moss in the moist hide every 2-3 weeks to prevent mold. A gecko that spends excessive time in the moist hide may be experiencing incomplete sheds or low ambient humidity below 30%.

1
Position the Tank
Place the enclosure on a stable surface away from cold drafts and direct sunlight. The UTH needs airflow underneath, so use tank risers or place the tank on a stand with open sides.

2
Install and Set the UTH
Attach the UTH to the outside bottom of the tank, covering the rear ⅓ of the warm side. Connect it to a mat thermostat with the probe between the mat and glass. Set to 88-90°F.

3
Add Substrate
Lay reptile carpet, ceramic tile, or paper towel across the floor. Paper towel is the best choice for new keepers because it makes waste visible and is replaced in 30 seconds.

4
Position the Hides
Place the warm hide directly over the UTH zone. Put the cool hide at the far end. Place the moist hide on the warm side with damp sphagnum moss inside.

5
Add Water Dish and Decor
Place a shallow water dish on the cool side. Add one or two cork bark tubes or artificial plants for sight breaks. Leopard geckos feel safer in a space that is not wide open.

6
Verify Temperatures for 48 Hours
Run the setup empty. Check warm floor, cool floor, and ambient air temperatures at morning, midday, and evening. Adjust the thermostat setpoint until the warm surface holds 88-92°F consistently.

Leopard Gecko Setup Cost Breakdown

Leopard geckos are one of the most affordable reptiles to set up correctly. The UTH thermostat combo is the most important investment and should not be skipped. Comparing costs with arboreal species like the crested gecko shows that taller enclosures drive up costs significantly due to height requirements and more complex lighting rigs.

Leopard Gecko Tank Setup Cost Estimate
Item Budget Option Recommended Option Cost Range
20-gallon long tank Used glass tank Exo Terra 30x30x30 cm $30-$120
Under-tank heater Zilla Heat Mat 8W Jumpstart 10W seedling mat $15-$30
Thermostat Inkbird ITC-306A Herpstat 1 or Vivarium Electronics VE-100 $25-$90
Thermometer Digital probe thermometer IR temperature gun $10-$25
Three hides Tupperware with hole cut Cork bark rounds + Exo Terra cave $10-$40
Substrate Paper towel (ongoing) Ceramic tile ($1/sq ft) $0-$20
Moist hide moss Gallon bag sphagnum moss Exo Terra Forest Moss brick $5-$15
Water dish + decor Bottle cap + cork tubes Slate dish + real cork bark $5-$30
Total $100-$370

Does a Leopard Gecko Need UVB Light?

Leopard geckos synthesize D3 from dietary supplementation alone, which is why they have been kept successfully without UVB for decades. Recent research from the University of Lincoln (2022) shows that access to low-output UVB (2.0-5.0% T5 HO) improves calcium metabolism, reduces supplement dependence, and increases activity levels.

If you add a UVB bulb, mount it 12-14 inches above the enclosure floor and run it for 10-12 hours daily. The gecko must be able to retreat from UVB exposure, so the bulb should cover only the warm half of the enclosure.

The contrast becomes clear against higher-demand species. The blue tongue skink needs a stronger UVB output and significantly more floor space than a 20-gallon long supports, making it a logical step up rather than a comparable alternative. For keepers weighing the two most popular beginner lizards directly, the bearded dragon vs leopard gecko comparison covers basking zones, UVB intensity, and handling expectations side by side.

Keepers drawn to snakes will find the ball python enclosure setup uses the same under-tank heat logic but requires a focus on ambient humidity that a leopard gecko enclosure does not.

Leopard Gecko Shedding and Humidity Guide

  • Normal shed frequency: Every 4-8 weeks for adults, every 2-4 weeks for juveniles
  • Ambient humidity target: 30-40% (dry gecko enclosure environment)
  • Moist hide humidity: 70-80% inside the hide using damp sphagnum moss
  • Stuck shed warning signs: Retained eye caps, constricted toes, dull gray patches after 24+ hours
  • Treatment: Warm shallow soak for 10 minutes, then gentle manual removal with wet cotton swab

Adults need a 20-gallon long tank (30x12x12 inches) at minimum. Larger is always better. A 40-gallon breeder works well for a single adult.
No, they need belly heat from an under-tank heater set to 88-92°F. A low-output UVB lamp improves long-term health but is not required for survival.
Three hides minimum: one warm hide over the UTH, one cool hide, and one moist hide with damp sphagnum moss for shedding support.
The warm floor surface needs 88-92°F. The cool side stays 72-78°F. Always measure floor temperature with a probe, not an ambient air thermometer.
Paper towel, ceramic tile, and reptile carpet are all safe. Avoid loose sand, gravel, and walnut shell, which cause impaction when ingested by juveniles and even adults.
SOURCES & REFERENCES

1.
Behavioural responses of leopard geckos to UV-B provision
University of Lincoln Animal Behaviour Lab, 2022 University

2.
Thermal Biology of Eublepharis macularius in Captivity
Herpetological Bulletin, 2018 Journal

3.
Reptile Husbandry Guidelines: Eublepharis macularius
Association of Reptilian and Amphibian Veterinarians, 2020 Expert