From the very beginning 16 years ago when I built my pond the objective was to eliminate Filamentous Algae without using chemicals or dyes. The pond over those years has taken on different forms but each kind of this changing pond never had an FA problem and has never had a chemical in it. Most of the ideas that made this happen came from Andrew J Zetts of Zetts Fish Farm & Hatcheries, Drifting, PA.
The pond in the first picture is algae free and is about 2 years old. The algae fish eaters were 20 KOI, 6 Israeli carp, and 100 Channel Cats. Others were bass & bluegill.
The second picture, FA free had added as additional algae eaters were clams, craw fish and snails, and water plants which are important for FA control and supply food for marine life. At this time I also added grass carp.
The bottom picture is the pond after a winter fish kill so I am starting over with a different kind of Pond. Still FA free but no carp FA eaters and the water is very clear. The FA eliminators are lots of tadpoles, lots of water plants, and the fish I have put in so far are ones that will not create water turbidity, GSH, BG & FH. I have some bass minnows left from the winter kill.
I believe by changing the combinations of more or less plants, algae eaters and grass carp you can have a less weedy fishing pond or a more natural nature pond. But all without FA
