Hello I have a 20 long tank with my BP currently in it, today I bought a UTH for 10-20 gallon tanks and stuck it on the bottom with about 2 -3 inches of substrate, I measured the temp of the glass and it was near 100, and also put the little sensor about half inch under the substrate and it's still reading 97... I have my thermometer on the lowest possible setting and its still very high.. Does anyone know why? I also have a light above but when I measured the temps the light was off. Any info?


I currently shut off the UTH and am using the light like I originally was, but how can I make it so the UTH actually works without burning my snake up?


Am I using the correct spot to measure the temps on the hot side? I had it on the side of the glass right above the substrate and it read 91