Quote Originally Posted by jason79 View Post
If you have an empty tub you could put the probe in it right over the heat tape. So you will be reading the actual temp inside a tub not the temp of the heat tape.
This is about the only way thats ever worked for me. In my racks (past n present) i keep one tub empty for that purpose. In a home where we run the ac in summer and heater in winter, im able to keep the temps where i want them, pretty accuratly. No space heaters etc. Good luck.