Crested Gecko Enclosure Setup & Tank Size
Last updated: · Reviewed against sources listed below
An adult crested gecko needs a tall enclosure of at least 18 × 18 × 24 inches, and 18 × 18 × 36 inches is better. This guide covers enclosure size by age, climbing branches and plants, substrate, lighting, heating and a gear checklist.
Enclosure size
- Minimum (L × W × H)
- Recommended
- Smallest standard size that fits
Tank gallons ↔ dimensions
Enter dimensions to get the volume, or enter gallons to see common tanks of that size.
This is our enclosure size calculator, preset for crested geckos.
Crested gecko enclosure size
Crested geckos are arboreal: they live in trees and spend most of their time climbing, so height matters more than floor space.
- Hatchlings under about 12 g: a small enclosure, about 12 × 12 × 12 inches, helps them find food and stay close to the right conditions.
- Juveniles and adults: at least 18 × 18 × 24 inches, about 20 gallons.
- Better for adults: 18 × 18 × 36 inches or larger. Keeper guides now treat this as the minimum for geckos over about 12 g.
Front-opening glass terrariums with a screen top are the most popular choice, because you can reach in without coming from above and the screen allows airflow. Our enclosure size calculator gives the minimum and recommended size and matches it to common terrarium sizes.
Branches, plants and hides
Fill the enclosure with things to climb and hide in: diagonal branches, cork bark tubes, vines and plenty of live or artificial plants. Crested geckos sleep during the day in dense cover, often high up, so leafy areas near the top are as important as ground-level hides.
Place food and water dishes on a feeding ledge attached to the wall, well above the floor. Crested geckos feel safest eating up high and may ignore food on the ground.
Substrate
Veterinary care guides suggest paper towels or reptile carpet, especially for young geckos, because they are easy to clean and cannot be swallowed. Many experienced keepers prefer a naturalistic soil mix, often with live plants and cleanup insects in a bioactive setup, because it holds humidity well.
Whichever you choose, avoid sand, gravel and wood chips small enough to be swallowed, and replace or clean substrate that stays soggy or grows mold.
Heating
In most homes, crested geckos need little or no extra heat. Aim for:
- Warmest area (upper enclosure): 75–80°F24–27°C.
- Cooler area (lower enclosure): 68–75°F20–24°C.
- Night: 65–72°F18–22°C; drops into the mid-60s °F are fine.
If your room is cooler, a low-wattage bulb on top of the screen, run on a thermostat, can warm the top of the enclosure. Avoid heat mats and strong bulbs that push temperatures above about 80°F27°C for long periods. Overheating is one of the most common causes of death in pet crested geckos, so never place the enclosure in direct sunlight or near a heater.
Lighting and UVB
Give a regular day–night cycle of about 10–12 hours of light. Crested geckos can live without UVB if their diet contains vitamin D3, which complete powdered diets do, but many vets now strongly recommend low-output UVB. Crested geckos are shade dwellers in veterinary UV research, so aim for a UV index of about 1–2 at the top basking branch, with plenty of leafy cover. A low-output “shade dweller” tube does this. Replace the tube as the maker recommends; some vets advise every six months.
Cleaning routine
Remove uneaten food within 24 hours and droppings as soon as you see them. Change the water daily. Wipe the glass and replace paper substrate as needed, and deep-clean the enclosure and décor every one to three months. Wash your hands after handling your gecko or its enclosure, because reptiles can carry Salmonella.
Crested Gecko enclosure checklist
This section contains affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.
18×18×24 in front-opening terrarium
The minimum adult size; front doors make feeding and cleaning easy.
Check price on AmazonCork bark and climbing branches
Crested geckos climb constantly and sleep in cover up high.
Check price on AmazonArtificial or live plants
Dense leaves give daytime hiding places and hold humidity.
Check price on AmazonLow-output UVB tube
Optional but recommended; a shade-dweller tube gives gentle UVB.
Check price on AmazonDigital thermometer and hygrometer
Catches overheating early and shows the humidity cycle.
Check price on AmazonFrequently asked questions
What size tank does a crested gecko need?
An adult crested gecko needs a tall enclosure of at least 18 × 18 × 24 inches, about 20 gallons, and 18 × 18 × 36 inches is better. Hatchlings under about 12 g do well in a smaller 12 × 12 × 12 inch enclosure until they grow. Height matters more than floor space.
Can crested geckos live together?
It is best to keep them alone. Males fight and should never share an enclosure. Females can sometimes live together in a much larger enclosure, but tail loss and injuries are common, and a lost tail never grows back. A male and female together will breed constantly, which is hard on the female.
Do crested geckos need a heat lamp?
Usually not. Crested geckos do well at normal room temperatures of about 72–78°F. Add a low-wattage bulb on a thermostat only if your room regularly falls below about 65°F. Too much heat is a bigger danger: long periods above about 80°F can cause fatal heat stress.
Sources
- PetMD — Crested Gecko Care Sheet (written and reviewed by veterinarians)
- Long Island Bird & Exotics Veterinary Clinic — Crested Gecko Care Guide
- ReptiFiles — Crested Gecko Terrarium Size & Cohabitation
- ReptiFiles — Crested Gecko Temperatures & Humidity
- Pangea Reptile — Crested Gecko Care
- Baines F. et al. (2016). How much UV-B does my reptile need? The UV-Tool, a guide to the selection of UV lighting for reptiles and amphibians in captivity. Journal of Zoo and Aquarium Research 4(1): 42–63
Where sources disagree we show the range they share. See our sources and methodology for how every number is checked.