Quote Originally Posted by The Serpent Merchant View Post
With other PVC cages that do not have a thermostat probe slot, I would agree with you 100% as heat build up could be an issue.
If I rembember correctly (and that gets harder every day) the old RBI PVC cages had the slot in the back and were designed for back heat. I'm positive I didn't have the UTH on the bottom of the cage. The only time I used a bottom UTH was during my short lived experiment with glass tanks...I used feet on those.