ok, lemme rephrase my original post a little...
I have a 10x11" UTH on the underside of a 20L ( left side, not that it matters) which is the exo terra "rainforest" 8 watt heater. Directly on the opposite side of the glass from the heater is the temp probe( the glass is sandwiched between heater and temp probe). I DO have a thermostat, however, I purposely unhooked it just to see how hot the the UTH COULD get while plugged directly into the wall. With or Without the thermostat, the hot side temp (the probe ON the floor under the substrate) is at best 88 There is NO snake in this enclosure....yet. Don't worry about the animal. I'm trying to get every regulated BEFORE putting an animal in there.