I think you also had some copper toxicity issues together with lower DO in the deep water with maybe some hydrogen sulfide from winter stratification that was brought to the surface with aeration. YP are three times more sensitive to copper than bass. If you are using blue dye this is hindering good natural dissolved oxygen production by the algae that you killed with copper based Cutrine application. Killing lots of algae with a well distributed / mixed dose of Curtine would lower the DO when all of it stopped making oxygen and started to die which also uses oxygen.
Last edited by Bill Cody; 04/27/14 12:36 PM.
