I FINALLY got my tubs from Freedom Breeder to go in my Animal Plastics 6 tier rack. I have the probe taped to the tape and set at 90. I'm getting readings ranging from about 88-94 depending on where I shoot my infrared thermometer. With the Animal Plastics corrugated plastic tape cover in place, I'm getting about 82-84 surface temp. With the thick plastic of the tub in place, what are you guys setting your thermostats at that translate into comfortable temps inside the tubs for our scaled friends?