DISCLAIMER: I know nothing!
I could be mistaken, but I did't think you necessarily want to "maintain the thermocline" during the summer??? Won't that water end up anoxic and therefore useless to the fish? I thought the 2/3rds of depth was for Winter diffuser?
If it were me I would put the diffuser on the bottom and then let water temp decide duration.
Last edited by wbuffetjr; 05/15/18 04:36 PM.
