Quote Originally Posted by FatBoy View Post
What do you have your differential set on? I set mine on 1 and it works fine. I use 6 of them with no problems. I even run my new incubator on a ranco.
The bolded part was my first question too. Also, I always set my thermostat to whatever it needs to be to get my desired surface temp hot spot. I always went off of a pro exotics temp gun for my surface temps. If I needed my surface temp hot spot at 92 but I needed to set my thermostat at 102 to get my desired surface temp then so be it (the 102 number was just a random number).