I just loved both of my guys into a Reptile Basics Iris rack with a VE 300 thermostat. The probe on the thermostat is set to 103 to make up for the aspen I have in the tubs.

When I used the thermal gun to check the hot spots in tubs they ranged from 80-92 with the substrate moved completely out of the way. This kind of puzzled me to I decided to take the tubs out and read the temps I the actual tape itself. Some sections of the tape read 103 and others varied up to 112.

Is it normal for my heat tape to have so much variation? Any advice would be great. I would really like to get the temps right so that I don't have to put them back in their tanks.