API POND ECOFIX SLUDGE DESTROYER Pond Water Clarifier reduces build-up of fish waste and consumes pond sludge, which is typically an accumulation of organic matter that degrades water quality and clogs pumps and filters. API ECOFIX SLUDGE DESTROYER contains all-natural, highly-concentrated bacteria to break down fish waste and dead algae, digest leaves and grass clippings, and reduce overall pond maintenance for the season. Use twice a week for two weeks as an initial dose at the start of the season, quick clean-up, and end of season, and once every two weeks for regular maintenance. With API POND products, its easy to keep a beautiful pond. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because were dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as koi, catfish, perch, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. Contains natural active ingredients to break down fish waste and consume pond sludge. Breaks down dead algae and digests leaves and grass clippings. Helps to reduce overall pond maintenance and keep pond clean. Use twice a week for two weeks for initial dose , quick clean up and end of season, and once every other week for maintenance. Contains one (1) API POND ECOFIX SLUDGE DESTROYER Pond Water Clarifier 16-Ounce Bottle. Treats up to 4000 gallons.