Keith

I am not very learned when it comes to fish kill origins except that 99% of them seem to be from water issues - low do, temp changes, etc. and not from other sources [pesticides, disease, etc.]. I do not aerate, but will someday, so I'm not in a position to hypothesize on reasons for the kill nor can I instruct you on how to ramp up your aeration system, but many here can do so.

Aeration/fish kill experts - any advice for our new member here?

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

[Linked Image from i1261.photobucket.com]