Using pellets is a simple way to treat sludge but they also have a more practical solution that is especially important in larger, deeper bodies of water but just as relevant in small ones. The pellets will penetrate the sludge. Liquids and powders are effective for eliminating sludge but a certain amount of the product is consumed by the water. This is still beneficial as it will stop sludge from building up but will not achieve the maximum effect on the sludge that has already built up. By penetrating the sludge, the pellets put the bacteria and enzymes in the location where they can be most effective............................Ginesis Sludge Pellets are simply the most effective way to tackle sludge problems in lakes and ponds of any scale. They are just as appropriate for a backyard fishpond as they are for a lake. Ginesis Sludge Pellets are an effective low cost way to clean the bottom surface of your pond or water garden without getting messy..................Ginesis Sludge Pellets quickly ingest muck , algae, and organic matter from bottom surfaces using blended minerals, muck-reducing bacteria and an organic catalyst which speeds up the bacteria eating process. Bad bacteria are replaces by good bacteria to restore clarity to your water environment..... Ginesis Sludge Pellets are bio-degradable and they can be used in Ornamental Ponds, backyard ponds, fish ponds, fountains and GOLF COURSE PONDS and are safe for fish, pets and humans.............................Ginesis Enzymes Sludge Pellets are safe for aquatic plants, fish, pets, and humans. Help your water garden get back to the state that nature intended.....for information ..........To calculate number of gallons in your pond: Multiply: Length (ft.) x width (ft.) x depth (ft.) x 7.48 = total gals. Broadcast evenly over pond or lake according to directions.