As Bill knows from my earlier posts and e-mails to him, I purchased a piece of property in NW Pa. which has an older 1.75 acre pond on it, that I am trying to add a few more years to before going the "drain and dredge" route. I have added an aerator and cleaned out a lot of the old vegetation which surrounded the pond to help reduce the organic materials going into it. I also took out a lot of decaying old wood. One other piece of my program is to reduce yearly weeds in the pond through grass carp, that were just introduced last summer ('03) and chemical weed control. The grass carp have made some progress this year but I still had to recently treat some shallower areas for weeds. My question is....will keeping aquatic weeds in check, or even pretty much wiping them out help to slow the build up of muck? Or, are weeds in some areas not a big factor in the muck build up equation?