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.