Thank you for the advice! I have a big bag of the repashy crested gecko diet, how much should I use? Like a teaspoon of the diet and then two more teaspoons of water? Would that be too much?I don't use any sort of articial heating and lighting, and the area my crested geckos' enclosures are in stays in the same range (70-75F). I know many other keepers also keep their cresties at room temperature. There is a recent thread discussing substrate and impaction where you can find more details, but in short it is safer to use a non-loose substrate (such as paper towels, slate chips, etc.). You could probably add some more sturdy climbing fixtures, such as fake or real branches, but the enclosure looks good to me. The "snake cave" you refer to can stay in - my geckos often make use of hides, especially during the day time. Additionally, if you are feeding Crested Gecko Diet, you will want to add a bowl for that. I HIGHLY recommend feeding Repashy Crested Gecko Diet, it is a complete diet for the geckos, and you just mix the powder with 2 parts water. Much easier and more convenient than feeding insects, and a bottle of it will last you a very long time.