Switched to a zoo med UTH, because the exo terra wasn't getting hot enough. The zoo med gets hot enough, except I can't get the substrate to heat up....I'm using repti bark for substrate, and inside of the enclosure, on the glass is getting to 100, but the substrate stays around 80. I'm going crazy, because if I thin it out more, I'm afraid he will get burned.

What other substrates would you recommend for me, that are good at conducting heat and retaining humidity...

thank you