Johnson stat and economy rack

[MarkS]

SO I ordered a johnson t stat to go along with my economy rack I am having temp reading discrepancies the probe from the thermostat says 95, i put it in the notch which is cut out in the back that goes under the tub. I put a temp prob inside and under the hide and it reads 100 which do I go off?

I turned down the stat so i would get a reading on the thermometer of 94. so now the thermostat reads 89, I guess the positioning gives it a 5 degree difference. based on the heat being trapped under hide.

I think i need a heat gun!!!

Hide boxes will retain heat especially if the heat is coming up from underneath. I don't generally go by the temperature on the thermostat, I measure the temps with a thermometer or temp gun and then adjust the thermostat up or down depending on what the actual temps are where the snake is going to be. I've got some of my thermostats set to over 100 to maintain a hot spot in the low 90's