Just thought of something, if anyone is still here. I read that the overhead light might contribute to the drop in humidity. Seeing as i'm having trouble with my UTH making that side too hot, Is it possible to just have the UTH going without the light? In other words, is the light necessary for anything more than heat if, say, I turn it off and the ambient temps are fine and the UTH side drops to a healthy level would I be depriving Kaa of anything.