RS - I suspect two things happen that cause the clouds of murkiness to come from the FA...key word "suspect". FA starts out on the bottom, so it could easily carry sediments up to the surface with it and water constantly moves around in my pond which leads me to think that the FA also filters any floaties that the water currents try to carry through it. We might also be seeing some of the FA decaying at the surface causing even more materials to form the cloud as the moss is disturbed.
