I'm using the 1/5 hp ViaAqua Chiller on my 85 gallon. I'm running 2 250W HQI's about 5 1/2" above the water. These are rectangular pendant style that I have sitting on top of the hood after I removed the lid. I also have a 20" ($45.00 at Costco) fan mounted on the wall above the tank. It cools...