2nd heater placement

[wynagain]

Im setting up a pair of heaters with a controller in a nuvo 27 sump and there is a small compartment for a heater so where should I place the second one and best place for the controller probe. It's a 75 gal with 2 200w heaters

 

[EnterName]

If possible I would try to put the heaters behind the temperature probes. This way the heaters actually run until the whole tank is at temperature and the temperature probe won't get fooled by local temperature differences caused by a running heater.

I would just avoid putting the heaters into the return chamber as the water level changes quite a lot there and you don't want the heaters to suddenly run dry.

 

[Asm481]

I have my temp probe in the overflow and the heaters are in the sump refugium.