I want to get my little guy some belly heat. The problem is is that I have a custom wood terrarium and can't do the under the tank kind. I'm using a ceramic heat emitter and with a bit of tweaking was able to work out the humidity but I would like to provide bottom heat. The terrarium is 52gal 36Lx14hx24d. What would you do? I'm tempted to just switch to the tubs but this is a really nice terrarium that I payed money for.

P.S. I was looking for options in the pet store (large chain that I won't name) and the idiot that was their 'knowledgeable' herp guy wanted to sell me a hot rock. I politely explained to him why they were utter crap and tried not to strangle the 'expert' when he said that's what he uses. Arrrrgh!