Yeah probably with my big surface area of water because of my big sump, I don't need the fans for cooling. And yes it is in the basement.
I had a 110 and 50 with no sumps in a second story apartment during the summer and don't remember high evaporation though, but again, no fans across the water at all, my lighting was seperated from the tank so there was little/no heat transfer.
The salinity swings without auto-top off of 10% evaporation per day must be pretty significant?
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