[BoomerD]

OK, Ebo-Jager makes a LOT more sense than Iwaki...thanks for clearing THAT up.

There is a fine balancing act with keeping a chiller and heater operating together without them competing all the time. That's where a good quality controller comes in handy, either the Ranco type like I linked to before, or one of the more comprehensive controllers, like the Neptune Aquacontrollers or the Aquadyne Octopus, both of which can be used not only for thermal control, can also monitor and control a bunch of other things as well;

Monitor pH, ORP, Temperature, Conductivity and Dissolved Oxygen

Control pH, ORP, Temperature, Conductivity and Dissolved Oxygen

Timers

Sunrise and Sunset Simulation

Moon Cycle Simulation

WaveMaker

Alarms


And much, much more. Unfortunately, the better ones are QUITE expensive by the time you buy all the associated hardware, but the peace of mind is usually worth quite a bit, as well as the ease of tank operation.