Ultratherm Under The Tank Heater, 11 x 35

I purchased this UTH for my ball python's new terrarium, and it works well! After monitoring it for 2 weeks (inside temps stay around 76-78*F), I've never had the floor temps get above 90* F (I placed my probe against the glass under about 1/2"-3/4" of coconut fiber bedding). It does a phenomenal job of keeping the floor temps in the ideal range, without getting too hot or too cold. Best of all, I can remove and replace it as needed, unlike many commercially-available UTH mats that need to stay put once applied. Quality product!

Works great for my 72 gallon hermit crab tank. My temperature has stayed nice and even around 81 degrees. I did insulate this with foil-covered cardboard taped over it, so that does help keep the heat in. But it seems to be a good heater. For hermit crabs, by the way, you put it on the back, not under the tank.