So I picked up a heat lamp for my cage today and I have it all set up now. I am using the Exo Terra Desert Heat pad (sized small) in a 20 gal tall aquarium - this was the one that the lady at the store recommended as it takes up approx 1/3 of the bottom of the tank. I also just bought one of the 5.5 inch Fluker's clamp lamps and one of the Zilla night black heat incandescent bulbs (50 watt). I've got that all set up in the cage right now, albeit it's just directly against the glass at the moment because due to some issues with my own stupidity, I have to wait to put the tile substrate in after I actually get about a centimeter cut off of the piece. (I called two of the building supply centers today; one said that they could rent me the equipment to do it, and the other said that the piece I had was too big. Ugh! Anyway.) The care sheet I got from the store says that the gradient should be as follows: - Day - Cool Side - 75-85 (24-29) - Day - Warm Side - 85-95 (29-35) - Night 65-75 (18-24) It's about 37 on the warm side and 21 on the cool side, albeit it's night and the house is naturally cooler now, but that kind of concerns me. If it's consistently 21 on the "cool" side - is that going to be far too cold for my leo? Should I consider going to a 75W bulb instead of a 50? Will post with temps in the morning, just in case this is a one-off thing, but it's been sitting there for a few hours now so it should be a consistent temp now.