The flexwatt is 2 feet of the 11 inch. I have it hooked up to a Helix DBS1000 Proportional thermostat with the probe on the heat tape.

I have to over set all my thermostats when I run racks. At my old apartment, I used to have to set the thermostat to 100-102 just to achieve 92 inside the tubs. So far I think 96 will achieve 88 in my incubator. I can take a picture of the inside of the incubator if you want.