Quote Originally Posted by Kaorte View Post
UTHs get hotter than you think, around 120*F max.
This is absolutely true -- I have the smallest UTH that ZooMed sells (the "mini" one), and running it at half power with a rheostat/dimmer keeps the hot side of my tub around 93-94f, and that heat is enough to bump up the overall ambient air temp in my tub by 3-4 degrees. So if my room temp is 75f, my cold side will read 78f to 79f, and the hot side will read 93f or 94f.