thank you all for replying so quick. the light is resting on just someting i made out of bamboo to get it away from the cage. I didnt know how else to elevate it (it gets too hot when its right on top). I have been using it for a couple days now and didn't think it would catch on fire, but definitely don't want to risk it. Nothing I have is regulated by a thermostat, but I'm getting the feeling the UTH is too hot, she has half her body out of the log instead of being curled up in there. Three questions -1. Where do i get a probe thermometer? preferably at a store and not too expensive. 2. Where do I get thermostats that work well? and 3. how does the thermostat work with the UTH? like how do you connect it to the UTH? thanks again