Quote Originally Posted by mlededee
you can control the flexwatt for both tanks with one of those thermostats but not the heater since it will be set at a different temperature. if you get flexwatt for the cool side then you will have to get a separate thermostat from the one you are controlling the hot side with.

tmlowe, are you saying that the herpstat pro can control both the hot side and the cool side flexwatt? i'm not familiar with them which is why i ask...
herpstat 2 is like 2 thermostats into one; 2 zones, 2 probes, 2 different settings. herpstat pro is like 4 thermostats into one; 4 zones, 4 probes, 4 different settings.