Pond Boss Forums AERATION Systems questions Is aeration always necessary?

Years ago I was contacted by a HOA that had an 18 ac lake that experienced summer and winter kills. The first year all they could afford was a Vertex system that would aerate 9 acres. The 2nd year they had a summer kill in the un-aerated half. So that proves to me that the fish won't move to higher levels of O2 in a pond.

WiPondGuy, how old is the pond? How much muck has accumulated on the bottom? What is the water clarity like during different times of the year?