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With a tank this big, I was also going to need dedicated power. To this end, I had the house upgraded from 100 amp service to 200. I ran two 20 amp lines to the garage, which the electrician tied into the new panel.  He made sure they were on the same phase to ensure that the AquaController can control X10 modules on both circuits.

The room is lit with a simple flourescent fixture. The grille is for an exhaust fan. After I fired up the lights on the tank and the chiller kicked in, it was obvious that I had severely undersized the exhaust fan. The original fan pulled 45 cfm. The replacement sucked 180 cfm out of the room, but after having two fan motors die in a month, it became obvious that kitchen exhaust fans are not suitable for this application. They are not designed for the continuous operation. Ventilation is now provided by a 12”x12’ greenhouse fan that pulls 750 cfm out of the room. I also upgraded to a greenhouse thermostat, which has a 3 degree hysteresis (temperature drop required for the fan to shut off). This combination is much more satisfactory and the fan only runs for a few minutes at a time.

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