John - I watched your videos - do you have theories/thoughts as to why the 1 shallow pond in the �ponds� video has been FA free for 10 years? Also, at what depth(s) did you plant your eel grass (Vallisneria??)? Not to be controversial but we had a couple of koi on a 2nd story balcony �mini-pond� that definitely ate FA as well as duckweed (a �portion� lasted about a day and a half) until rocky raccoon scaled the side of the house� I don't know if their artificial environment played a role.
