Shorty - IMO it is more important to get a good dense crop of vegetation growing on the watershed before implementing the alum treatment. If the water shed is not well grassed you may well have to do several alum treatments in the next couple years.
J-lion, Creating more suspended particles in the water column will probably result in needing more alum to get the same amount of clearing, assuming the same amount of alum was applied to each situation - less and more dense suspended clay. I would leave the aerator off for several days 2-5 after treatment to allow more complete settling of the flocculant in the deepest zone.
Last edited by Bill Cody; 07/02/1209:24 AM.
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