My baby hognose is in a twenty gal long with aquarium glass. He is on about 2in of aspen with a heat bulb that was doing just fine, until today, maintaining a 90 degree hotspot or even higher, actually. I own a zoo-med 10-20 UTH that's doing a lot of good on the other side of the room. So do I need to put a repti carpet under the aspen in order to use it? And how necessary is a thermostat? As I don't have one of those. Should it go on the side or the bottom? Or maybe I'll just put a bigger bulb in the heat lamp. I do have a heat gun. Also about thermostats, my tanks are kind of spread out is there any way to get all of them on the same one or two?