I did not mean to be discouraging and in fact my room is tonight 67ºF and my racks temps are 90/80 and 83 ambient. It can be done it just isn't easy and that the simple answer is just to heat the room there is a reason why 90% of racks are in 80ºF rooms it is just simplicity. I would venture a guess you balanced a tank too so you didn't mist twice a day I know my tanks I rarely mist at all. I mist the rack more same thing it can be done it just isn't as easy as other options.