Thanks for your answer. It looks like with my bass predators that I probably can�t completely eliminate, I would be back to having FA in a few years. Very frustrating. The tadpoles did an excellent job of FA control but that only lasted till mid June when they became frogs and there is no guarantee I will have that high population next spring. So the dilemma is how to control FA the second half of the year and not use the three fish types that used to work for me but can�t be used in my clear pond concept. I will have more plants next year that should help but as much as I like plants that might be too much even for me. The pleasent thing about the pond after the fish kill is I have lots of minnows and some bluegills and bass to look at and feed from my deck.