That is weird. Killing all sizes of fish? I would think little 3 inch BG would not be effected that quick with air running?

Any chance something is getting into your water from somewhere? Or anoxic gas from the pond bottom is coming out?

I don't know have no idea just typing out loud like Spark. Sorry to hear that man.... Hope you figure it out. If you do let us know.

RC

The only difference between a rut and a Grave is the depth. So get up get out of that rut and get moving!! Time to work!!