I decided to lback off on my central air which is at a constant 72degrees in an attempt to save a bit on my electric. I lowered raised the tempto 78 until i got home from work. I suppose because it was 78 in my house, the tank is running at 82.8. The Halides go on a a few hrs before i get home. I am worried that by the time the lights go off i will be at 85. If i opt to use a chiller what size should i get for a 90 gal. which is not going to be overkill. I am not familiar with chillers, what brand is recommended to put on the outside of my tank and not too noise? any suggestions.