Terrarium is 24"x18"x18". Room temp is around 70F. Airflow is normal I guess, its in a bedroom. When I was setting up the terrarium I went ahead and stuck the UTH directly to the glass, so I can't exactly remove it without wreaking it. I guess I was primarily worried about what the temps would...
I have a medium Exo Terra Heat Wave on the underside of the tank, attached to the glass. I have a good 1 inch of vita-sand as substrate above it (please no discussions on the choice of substrate used). With just the UTH the surface temp is reading 89F, underneath the sand, at the glass level, it...