Quote Originally Posted by tttaylorrr View Post
i would move the probe over the hot spot below the substrate as you will always need to know this temperature. in all my enclosure i use one probed thermometer/hygrometer for the hot spot and one stand-alone thermometer/hygrometer for the cool side. you need to be measuring the hottest temperature your snake can touch, which would be below the substrate over the hot spot.

where were you taking your hot spot temperature readings before? above the substrate?

EDIT: here's a diagram that shows the standard way to set up a UTH, thermostat and probe thermometer:
Great information as always. Wondering if you could reduce the need for two thermometer / hygrometer units and just get something like this:

https://www.acurite.com/digital-indo...r-00891a2.html

This way you could measure the hot side surface temp w/ your probe and sit the unit on the cool side to read both your ambients and humidity.