When i had my first bp in a tank, after messing with heat lamps and all that stuff, i put a uth under the 20 g tank and reflectix on three sides of the enclosure to reflect the heat back in with duct tape covering all but a 3rd of the screen top, and i have to say i was pretty successful, temps and humidity where great. If you want to give that a shot, you can pick reflectix up at any ace hardware by the foot for a buck. Good luck![]()