I had to purchase a new heat pad for under one of my snake's tubs. I was using the exo-terra small. I was getting a temp of around 103 without a thermostat, which I thought was fine. I have about 2 inches of reptibark on top of it and the ambient temp in the cage is 82 so I am happy with that. However, the chord ripped out of it from sliding the tub in and out of my make-shift rack, which isn't really a rack at all but a few coffee tables stacked up with covered tubs slid into them. Anyways, the pet shop I went to was out of this brand heater, so I had to go to pet smart and all they had was the Zoo Med Repti Therm for 10 - 20 gallon enclosures. I bought the Zoo Med ReptiTemp Rheostat as well, because I plan on eventually getting or building a rack system soon so I can expand my collection. Its a good thing I did, because this pad is much hotter. Without the thermostat, I was getting temps as high as 140 degrees!!! Even on the lowest setting, It still comes in at 112 degrees F!! What should I do? Buy a new heater? Change my thermostat? Has anybody had this problem before???