My room has been staying about 80 with the space heater I have. You are right though, it is probably best to just move him to a 10 gallon. That way I can get his freaking out over with, lol! I had a question about his water dish too. I use a small plastic container that is about three quarters filled with rocks. When he sits in it, the water comes up to his nostrils. So I am guessing the depth is good. How wide should it be though? From the sounds of all the splashing last night he was having a ball in it. This morning it looked like there was she'd skin in the water too. And are feeder fish good food items as a treat?