Use heat rope (big apple I believe) or flexwatt. They are both cheap and reliable.

Evey heat source should have a thermostat. But not every cage needs its own. If all of the cages are identical and all of the heat sources are the same size/watts then you can plug more than one cage into an individual thermostat. If you use either of the above products you can even use a single piece wound through the whole rack with a single plug and a single thermostat. I divide my racks into an upper half and a lower half so that the racks mower to the floor where its cooler have their own thermostat and the upper ones have their own.

[ Show Entire Thread ]