I will definitely go out and get a thermostat to control this. The UTH is already stuck to the underside of the tank. Can I just peel it back and stick the probe in the middle? Also I tested the UTH without the snake in it after reading a few things on here so thank-you! Also when I ran the UTH without a rheostat it got as high as 130! UI thought they can't even go that high. Once again this was verified using my infared thermometer.