A UTH, its regulated but I have the thermometer taped to the glass underneath since my current tank has no wire-holes. I set the thermostat to 92-94 because when measuring with my infrared heat gun the substrate on his warm side stays stable between 87-92 degrees. I had a humidity meter on the wall but reading some posts here saw some horror stories with having them come loose and sticking to snakes skin. My snake kept climbing on it so I took it off to avoid it being pulled off the wall accidentally. Currently I'm misting every few days. I try to cover the top tomorrow, it's a bit difficult because it slides in grooves in the tank instead of being placed and attached from the top down and the tolerances are pretty tight because it "locks" in place. I'll have to think of something creative to cover the screen with.