Quote Originally Posted by ssst3fn View Post
Her hot side is at 90 with the cold side being 76, she has a UTH on a thermostat (set to 82) and a heating lamp on a timer to bring the temps up during the day.
If I am reading this, her UTH is never on then.
The surface temperature of the UTH under the substrate should be around 90 degrees.
What are you using to read temps and from where?