I'm a new BP owner and I've had my 3 month old for about a week now. I've got a UTH that I've got temp controlled perfectly between 92 and 94 degrees, and Kurt seems happy hidden in his hide on the hot side of the tank. My only issue is that the ambient temp in the tank is VERY hard to get above 85 even on the hot side. The UTH clearly doesn't raise the tank temp at all. I've even covered most of the lid to keep heat/humidity in but it doesn't seem to work well. I have to keep a heat lamp on over the opening in the screen cover in the daytime just to keep the temp above 75 or so. I doubt that the poor guy even goes onto the cool side at all, even at night, simply because both the substrate and the ambient temps are too low. I think that this might be partially due to the freaking FRIGID temperatures my place reaches, especially at night, even with the heat cranked.
Does anyone else have this problem? And what are my best options? Space heater? Ceramic bulb?

I'm going nuts with this. I know he's happy on one half of the tank at least, but seriously.

I've only had the guy a week, and I have NOT been able to sleep most nights because I'm continually waking up and rushing to his tank to check the THREE thermometers I have going with probes at different places in there. I MUST SLEEP. Haha.