I'm getting confused here (nothing particularly new and I have a tendency to reside in a land of confusion).
Wiki definitions:
Stratification (in the earth sciences) is the formation of water layers based on salinity and temperature.
Destratification is a process in which the air or water is mixed in order to eliminate stratified layers of temperature, plant, or animal life.
I would think for a Geo Thermal system to work well you would want Stratification. Isn't that what a geo thermal system relies upon - the temperature differential? And if that is true then I would think that an aeration system could impact a Geo Thermal system.
In this particular case though my ignoramus guess is that the pond loops floating to the surface were causing more issues that the aeration system. Shouldn't these loops be weighed down or something?
I for one appreciate all of the geo thermal posts on this site and follow the discussions.
