Doubt it makes you feel better but worst year for fishkills in a longtime. THis heat has been brutual to many pondowners. I wish I saw this post earlier I woudl have advised you to mist with copper to slowly kill the phytoplankton. It has saved fish on many ponds this year. Slowly kills it back before a severe crash. I think you had a crash so thick sunluight blockeed to other plankton. The reason you saw it turn colors was dying phytoplankton Im afraid.
We have alot of water flowing through our hatchery ponds. We treated vegetation agressively thinking with inflow no biggie. Matt noticed fish piping so put in emergency aeration oxygen was 0.89. It saved most but lost the grass carp. Point being we know what we are doing and still bout screwed up. It was cool to see how quick a surface aerator works to correct. Small pond but went to over 3 ppm in less than two hours. Over 6 DO in less than 5 hours.
Last edited by Greg Grimes; 07/22/12 05:34 PM.
