So, do I just leave it alone and wait for it to clear? What would be the criteria to be sure it needed to be treated? In reading the threads you posted, I have some of the same symtoms as one of the other pondmisters. A period of very clear water followed by the water turning brown, and now the red bloom on top. I do have a large population of bluegill which I feed every other day (approx. 3 lbs.per feeding). I have also noticed that I have almost no plant life in the water. I have 3 grass carp in the pond and have been thinking of removing 1 or 2 thinking that they have eaten all of the vegetation. Would this be recommended? As of this posting the red stuff is covering about half of my 1 acre pond.

Mihalko1