This idea looks like it will "push" surface vegetation somewhat to help in control. Bruce what kind of surface area in sq. ft. are you visibly moving. This could be the trick to help in duckweed ponds. The circular motion would repeatedly pull the duckweed thru the turbide water. Now you have me thinking on a new line! Standard aeration just pushes out a hole in the middle but never disturbs the duckweed. Great post Bruce.
