I can post pictures of a couple of ponds that only have BG, RES, YP, GSF in them and they are FA free also. NO Koi, carp, etc. Visibility is around 36".

Am I saying that those fish are algae eaters because I don't see any FA in the pond? Not in this lifetime. The reason is because they nutrient load is very light, and the photoplankton is utilizing enough of the nutients that are produced by the fish to keep FA from getting a foothold. There are virtually no plants in these ponds either.

There are a number of contributing factors to not having FA in a pond, not just critters eating it.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).