Alright, I'll try taking the construction paper to the tank. The way I heat up his feeders is by a blow dryer and I double check their temps to be around 98 and the head at around 100-105 with the ir gun. Are rat pups at the age where they could give him a serious bite? I'm not sure I'd feel comfortable leaving him alone with it. I'm also a little concerned with what I could change his substrate to. I have him on the carpet because I live in a really humid climate and now without the ceramic heat emitter his humidity may get a bit too high. Any suggestions on what I could change it too that wouldn't make the humidity skyrocket?