I just bult a rack, but I have a question. Do I have to put a thermometer in every tub?
I like using herpstat thermostats, the LCD panel provides a contant readout of probe tempature. I do have one rack thats controlled with a reostat. I have indoor/outdoor digitial therometer on the heat tape to see what the temps are at for it. I always use a infared temp gun for my spot checks.
I only put one in next to the thermostat probe. I use a temp gun to check temps every now and then. you can put one at the bottom and top of the rack if you want. that works.