DaRealJoker said:what you want is floor space Height doesn't have to be too much I'd use a heat emitter aswell. I don't use one tho. I have a large "heavy" rock under the basking light. It's black and really holds heat well. It stays cool enough to touch but it does warm up lots. I'd recomend doing that. On cold nights my tegu will burrow close the the rock and he stays warm all night. On other nights he burrows under his cave. The heavy rocks hold heat longer and better. Don't need any floor heat and infact I know it's not needed at all. If the nights get too cold I run a regular outdoor flood light (painted red) for extra warmth.