So i thought maybe aerator during winter killed some fish and maybe it did.I shut it off from advice i got on the forum and waiting for temps to come up to turn back on.Surface temp around 70, 18 to 20 inches down 58 and 8 ft around 52 degrees.My question is when should i turn aerator back on? Fish i found today was still alive and died a half hour or so later, attached a pic.
