The probe for the thermostat. It is about .250 inch diameter. The UTH instructions say to make sure the UTH is flat against the glass with no bubbles. If I was to place the thermostat probe between the UTH and the glass it would create a large bubble in the middle and where the wire is.
I went ahead and placed the probe inside the tank against the glass about in the middle of where the UTH is. I used heavy duty scotch box tape to tape the probe to the glass. I know I’m not supposed to use tape inside the cage but I had no way else to stick it to the glass. I don’t have a hot glue gun.
Now I have an even bigger problem as the ambient temps are way too cold. The surface - belly heat is currently 93 deg and the hot side ambient is 75 deg and the cold side is 69 deg. My house is air conditioned and I don’t' know how to get the ambient temps up. I hate to think about using that dreaded heat lamp again that loves to suck out the humidity.