im currently fighting a heat problem. I changed from 2 65w CF
to a coralife dual 150W HQI retrofit. now my tank in a air conditioned room gets as high as 84 deg. I have put 2 fans on the tank (6") seemed to bring it down a little bit, adjusted the heater, I think it was runing a litle warm. but still have like a 4-6 deg temp change over 4 hrs. I have 2 rio 2100 pumps in the wet dry running a skimmer and the return. I tried turning the skimer off to see if that was an issue, and it didn't change the temp. I took the heater out so i can see if it's on and it seems to be on much longer than it should be. heater is set for 75 deg tank is at 78 and it's still on. So i am thinking a external temp controller? any suggestions? maybe a chiller? I am looking to upgrade to a 180 possiably this week, but i want this to be fixed just in case it doesn't happen. If you think a chiller is the olny option, what would be a good choice?
thanks in advance..