Quote Originally Posted by uafgrad View Post
The substrate is about 1" deep above the heat mat

I havent tested the temp
I bought a "hi temp" heat mat today on the reccomendation of someone local. It was working great until the bottom of the tank cracked.
So Im off to buy a new tank and try again
For almost all UTH's, your going to have to use a thermostat because they get too hot.
The bottom broke from the heat? If so, it was WAY too hot. How are you recording your temperatures?