Really? Thanks! I may try that. I like the idea of not worrying about the foil. The water bowl I'd presume would keep the humidity up?
Also, do you have an UTH you'd recommend? I've heard good things about Fluker's and UltraTherm, but the most common ones I see around here are zoomed. The tank would be 36" x 18" so it would probably need to be roughly 12" x 12" I'd presume