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.
