For a heat lamp or ceramic heater in my glass tank:

What side should it heat up? The side with the UTH or the side without? Currently the water bowl is in the non-UTH side to keep bacteria growth down. I could see how being over the UTH side might create a too-hot side and a too-cold side. I could also see how being over the non-UTH side would help keep humidity up by evaporating water in the water bowl, but again then we have the bacteria growth problem.

I've got a spare heat lamp and 50W "moonlight" a.k.a black light Exo Terra bulb (a friend of mine heard I was getting a ball python and dumped a bunch of extra equipment he wasn't using anymore) so I'll put that on and see how that affects temps and humidity.

I'm actually running a more-humid-than-I-want tank right now, at about 80% humidity, so I'll see if I can't get a good balance of temp and humidity with a bit of work.

Also I can't find a rheostat or thermostat at the local target, going to have to look up where the nearest walmart is. I've only seen like.. one.. in Minnesota ever, since this is Target country.