Well figured out some bad news today. Today was first time I've had the tank fully up and running. I tracked it periodically throughout the day with my apex fusion on my phone. Zeovit requires lights on min 10 hours a day from day 1. So I had my MH's +T5's on all day. I kept track of the temp. Started out at 77 degrees this morning, by 8pm tonight it was and still is at 81.3 degrees. This was only running 10 hours, no top on the tank, fan running non stop on the lights. So with that big of a difference, and the house was 73-74 all day, I think I'm going to need a chiller. I can't mount a fan on top of the tank and still have a lid, so my only option would be to mount it at the sump and I don't think that will be enough. Its not even summer yet. Just a warmer winter day.
So on the lookout for a chiller now. Sigh...