Durvet AquaVet Bio Pond Cleaner features BIOSTART™ Complex, a natural probiotic formula designed to remove muck, sludge, and organic debris from ponds with heavy organic loads. The concentrated probiotics enhance natural bacteria to break down sludge and bottom muck, supporting a healthier pond environment. Suitable for year-round use, it includes cold and warm water strains, with the BioStart Complex providing starter food for spores upon entry. Apply monthly for 90 days, then every other month until muck is eliminated. One liquid gallon or four throw packs treats 1 surface acre, 4–6 feet deep. Ideal for ponds with muck, leaf debris, excess nutrients, or unpleasant odors, helping restore water clarity and depth naturally.