My alum application worked extremely well. Unionized ammonia was reduced to virtually nil and my water clarity, i.e. secchi readings improved from .5 m. to 1.1 m. I also did not have a summer kill this year as I did the previous two years. My ponds are fed by well water which comes in at pH 8.1 which means I have the ability to buffer the acidity produced by the alum reaction. I also feed my fish which eventually starts to increase NH3 or ammonia to high levels. My problems appear to be temporarily solved. I don't have any experience on how alum works on inorganics such as suspended silt particles. I only have to worry about organic buildup from feeding.

Holding a redear sunfish is like running with scissors.