Because in my setting I dont want to recirculate water , 1 water accident could ruin flooring ,that's why I went with DWC individual buckets (to many hoses for leaks and breaks) , if I wanted RDWC I would of bought RDWC . Everyone's setup is particular to them and their confines in location availability, we all know that . I really appreciate all the knowledge given me here but none of it answered my original question "has anyone tried cooling the air feeding the air stones to lower bucket temps" if so what were the results . Obviously nobody that's read this has tried it. Guess I'll be the 1st