Lukky, I'm no expert on ponds, but can you contribute the small amounts of FA to a warmer, sunnier, cloudier, wetter, or drier summer that typical? You certainly do not have a FA problem like some. I'm guessing that you are seeing it in amounts for the first time and I am thinking that this years weather has had something to do with it.
How old is the pond? How deep is it now?
Maybe my bump will get the attention of someone in the "know".
