ReptiGuide is reader-supported. When you buy through links on this page we may earn a commission, at no extra cost to you. Learn more.
Quick picks
Exo Terra Glass Terrarium 18x18x24
The classic adult starter enclosure: front-opening glass doors, a screen top and a raised base.
Exo Terra Glass Terrarium 18x18x36
The same proven design with an extra foot of height, which is where crested geckos spend their time.
REPTI ZOO Glass Terrarium 18x18x24
A lower-cost front-opening glass terrarium with similar dimensions and a screen top.
What size does a crested gecko need?
Crested geckos are arboreal: they live in trees and shrubs, so height is what counts.
| Gecko | Minimum | Better |
|---|---|---|
| Hatchling (under ~10 g) | 12×12×18 in | — |
| Juvenile | 12×12×18 in to 18×18×24 in | — |
| Adult | 18×18×24 in | 18×18×36 in or 24×18×36 in |
Very young hatchlings can struggle to find food in a huge enclosure, which is why many keepers start them in something smaller and upgrade at around 10–15 g. If you go straight to adult size, keep food bowls high up and the enclosure densely planted.
Glass vs PVC vs screen
| Type | Pros | Cons | Best for |
|---|---|---|---|
| Glass + screen top | Holds humidity, easy to see in, widely available | Heavy, poor insulation | Most keepers |
| PVC + glass front | Holds humidity and temperature very well, light | More expensive, less visible from sides | Cooler homes, bioactive builds |
| Full screen/mesh | Excellent ventilation, light, cheap | Dries out fast; hard to hold humidity | Very humid climates only |
For most homes a glass terrarium with a screen top is the sweet spot: it holds the humidity cycle crested geckos need while the screen gives airflow.
Features that matter
- Front-opening doors. Reaching in from above stresses geckos and makes maintenance awkward.
- Ventilation. A screen top plus some front or side vents stops stagnant, mouldy conditions.
- Secure locks. Crested geckos are strong climbers and escape artists.
- A raised base or deep bottom. Lets you hold several inches of substrate and a drainage layer if you go bioactive.
- Room for lighting. Check that a UVB tube and light fixture will sit across the top.
Setting it up
- Fill the top two-thirds with branches, vines and plants at different heights.
- Mount a ledge feeder high on the glass for food and water.
- Add a moisture-holding substrate (or paper towel for hatchlings).
- Use a timer for the low-level UVB/light.
- Keep a digital thermometer high and low: under 82°F (28°C) at the top at all times.
For the rest of the setup, see our crested gecko care sheet and the beginner setup checklist.
FAQ
Is a 12×12×18 enclosure big enough for a crested gecko? Only for a hatchling or small juvenile. Adults need at least 18×18×24 inches.
Glass or screen enclosure for crested geckos? Glass or PVC with a screen top for most homes. Full screen dries out quickly.