Most captive crested geckos are housed in a standard glass aquarium, with a 10-gallon size being large enough for one adult. Obviously, the more geckos you are housing together, the more space you will need to provide. The aquarium should have a tight-fitting lid, and the kind with small doors work well, as they allow an easy way to feed without the potential for escape during feeding time.
The bottom of your gecko’s cage should be covered with a substrate, which can be peat moss, dried leaves, soil, newspaper, or a variety of other choices. The cage should also include hiding areas. Since crested geckos are nocturnal, they will need places to hide during the day. Hiding places can be made out of many different things, such as a box with a hole cut out of it, a section of PVC pipe, or a cardboard paper towel roll.
Crested geckos prefer temperatures between 72° and 80°F. Temperatures that are any higher or lower will quickly stress your pet. Most rooms that are heated in the winter and air conditioned in the summer will suit a crested gecko just fine, with no additional heat source required.
The humidity is an important factor to consider in your crested gecko’s housing. If the humidity is not adequate, your gecko may experience dehydration or shedding problems, which could eventually be fatal. The relative humidity of the enclosure should remain between 70 and 80 percent. You can keep track of the humidity by using a hygrometer, and if the levels fall too low, mist the sides of the tank with a spray bottle to bring up the humidity level.
To avoid the risk of certain health problems, your crested gecko’s enclosure should be cleaned regularly. On a daily basis, you should remove any uneaten food and make sure he has enough clean water. Every week or so you should change or clean the substrate, clean the walls of the cage, clean any accessories in the cage, and sanitize the water bowl. Every single month, the cage should be broken down completely and thoroughly sanitized with a 10 percent bleach solution.