In my opinion FA is good when you look at it as food source and are converting it into animal life. Rainmans tilapia are a great example. Also KOI, Israeli Carp, tadpoles, snails and water plants also help to control FA. Plants help steal nutrients from the FA and the examples given eat FA while it is forming under the water before it can float to the surface. I like to have traces of FA just around the edges of the pond.
