Thanks for the input. I have a 55-gallon that I was considering for his home, but thought it would be a, too big for him (he's about three feet long, though I've never measured), and b, too difficult to maintain proper heat and humidity. I figure I'll stay with this setup at least through the winter, then make a decision based on my experiences keeping the temps and humidity where they need to be in the smaller tank. If he wants to roam at night, I want to give him plenty of space and branches and wood stuff to explore--he's the coolest pet ever and deserves it.

Out of curiosity, anyone have any experience in maintaining a 55-gallon? I'm guessing I'd need a bigger UTH mat, maybe two, plus a heat emitter bulb. Summer times here aren't a problem, but it regularly gets below freezing in the winter and we keep the house below 70 degrees (and still get stuck with $150 monthly heating bills).