Quote Originally Posted by chrid16371 View Post
Take your thermostat probe and move it so its under the tub sandwiched between the tub and mat. I would also recommend getting another thermometer so you can compare it to your other. You should get the acurite 00891, they are very accurate. Also you can put the probe on the hot spot and put the unit on cool side and get your cool temp and humidity, that's another reason I like them. I own 11 of them now. Your current thermometer could be giving an inaccurate reading. Does your thermometer have 2 probes, one for temp and one for humidity?
Erm, that acurite 00891 appears to be an American product and I can't get it here in the UK, and my thermometer only has the one probe but it's a rectangular shape with a sort of arrow on the head of it. I'll try moving the probe so it's almost under the RUB.