I got the probe issue figured out and everything is set up. I'm just struggling to raise temps. I noticed though, my thermostat is keeping the tape at 93. My thermometer is glued to the bottom right above where the thermostat probe would be over the tape, but my thermometer only reads 81-82 on the bottom of the tub. Is it typical to lose THAT much heat in the tiny space between the heat tape and the bottom of the inside of the tub?