k is a principal investigator for Vertex Water Features, based in Florida. Part of his job is to find out the effects of aeration in ponds and lakes.
https://fishing.qciss.net
He calculates oxygen demand, studies the different layers of lakes, uses bathymetry maps to compare data, all in the pursuit of aeration efficiency and ways to keep a dynamic system as healthy and autonomous as possible.

For Chad's question above, Patrick dived into the physics of water. "At 39 degrees, the water is denser. For that high-elevation pond, moving a shallow diffuser means affecting the water at that depth and beyond, not necessarily merging it with deeper water."

When asked if the same principle applies during the summer months, he answered in the affirmative, with some caveats.

He explained that oxygen demand affects the efficiency of the aeration system. If aeration can be maintained and ahead of oxygen demand, the water tends to be happier. But, as with everything in the pond, "it depends," he said.

A fifty-year-old pond in a swamp between cornfields in the Midwest will be quite different from a three-year-old lake in the sandy hills of Carolin.