For FA I used to use a combo of 20 KOI and 6 Israeli Carp for my one acre. But then I had Large Mouth Bass to control their babies. I have to say that worked well for me, but it always is a balancing act isn't it.
I have a different kind of pond today without an FA problem but it is controlled by excessive vegetation and lots of tadpoles. But my pond purpose now is for photographing wildlife.
WOOD DUCK
