I just started my new 90 gal reef. I set the tank up filled it with ro/di water added salt and 90lb of live sand. I have a 27 gal sump which I built. I just finished my canopy and installed my 2 400w 20k radiums with spider reflectors. I havnt installed my canopy fans yet but I have two clip on fans over my sump. I am planning on having 2 4 inch fans on each end of the canopy 2 blowing the air in and the other 2 pulling the hot air out. I was just curious to turn them on and see how high the temp would go in an hour.It started at 76.a and in an hour wsat 77.7. I am hoping the fans in the canopy help a lot, but if not I am willing to buy a chiller. I saw a aqua via 1/4 hp on ebay for 300. I havnt heard of them and was wondering if they were any good. It is a inline. I was leaning more towards a 1/5hp csl inline. What do you all think? Thanks, Mike