Hmm somehow I cant edit my previous post. Anyway I just wanted to add, if my balls spend all their time in there, then surely it cant be too hot, can it? If somethings burning them, they wont feel it at first but the heat will get in and theyd feel too warm and move to somewhere cooler, but they dont at all. I'm not saying my snakes are getting burnt - they are NOT BURNT. Just giving an extreme example. They just stick their heads out every evening (now and then they would come out for a walk, or slither).