Quote Originally Posted by xdeus
One thermostat is fine for the rack, with one probe. Most people tape it to the Flexwatt on one of the shelves, then adjust it accordingly so you get a nice gradient in the bins. It'll take a little while to dial it in, but after that you can just forget about it for the most part.

In addition to the thermostat, I'd recommend a digital dual probe thermometer like the Walmart Accurite (just one is all that's needed for the rack), two hides, and a water bowl for each cage. That's about it. Also, a temp gun is very handy for getting temps in all the cages at different locations. You can pick one up at tempgun.com for about $25.
ok if you have only one probe how does it know the temp of all the racks.. sorry for the dumb question I am trying to get this figured in my head

Also, do i need a thermometer for each rack or does the dual probe take care of 2 racks?

thanks for your help