i agree i just got my herpstat and been playing with it and i have noticed (with my old thermostat aswell) that when the snake sits on it or the thermometer the temp drops 3-4 degrees. So my question is i have a tub arriving monday and i think i will place the probe between the tub and flexwatt(outsite the tub) but can someone tell me who uses this method what temp they must set the thermostat to to get 92-94 degrees in nthe tank - i imagine pretty high