Get rid of pond sludge! Use TotalPond Sludge Remover when you have sludge build-up at the bottom of your pond. This natural liquid formula utilizes a blend of beneficial bacteria to break down fish waste, phosphates, nitrates, and other water pollutants. It also reduces odors produced by organic decay. Additionally, Sludge Remover eliminates debris accumulation in filters, making filters more efficient with less maintenance required. For the best results, use 48 hours after using TotalPond Water Clarifier. One 16 fl. oz. bottle treats up to 960 gallons of water. Use while water temperatures are above 50°F. TotalPond Sludge Remover is an environmentally safe product. When used as directed, this product is safe for fish, plants, domestic and wildlife animals.