how hot is it where you guys live?
my 10 never hits 81 and the room gets up in to the mid 70's
i hung my sunpod from the ceiling,
I'm in Edmonds Washington, 20 miles north of Seattle. My room temp today is around 81 F and my 20H tank is at 79.7 F and the 7 gallon Minibow is at 78.8.
No fan or chiller running on the 20H but I do have a ReefKeeper 2 on it and on the 7 gallon I have a little Honeywell Tonado fan blowing across the lights to keep the temp at the 78 degree mark.
Cheers,
Alex