Points well taken heronblu, that is why I am going with less expensive and not targeted at ponds, but specific bacteria to digest the makeup of most septic and pond sludge, cellulose, fats, oils, and such. Realizing that bacteria are already at work on the sludge, but also learning that aerobic bacteria are far more efficient at digesting most of the bottom sludge and that upping the count will get things going, but that without a good bottom aeration program, you are wasting money.
