Muck Defense tablets contain beneficial bacteria that digest organic debris, also known as pond scum, that resides at the bottom of outdoor backyard water gardens or koi and goldfish ponds. Muck Defense works with nature to remove excess nutrients. It reduces smelly odors, leaving you with crystal clear, clean water free of any brown muddy gunk and pond sludge. Made of a naturally occurring blend of bacteria and enzymes. When used as directed, treatment will not cause harm to any animal, frog, dog, chicken, duck, trapdoor snail, turtle, pet, or other wildlife. Safe for horses, ducks, birds, tadpoles, fish, and other aquatic life. Will also not harm any plant leaf, lily pads, or live aquatic vegetation. Okay for use with pond equipment and accessories including biological filters, aerators, fountains, and skimmer systems. Will not harm your pond pump, spitter, water feature, filter pad, clarifier, purifier, fountain, or other equipment. Apply tablet (also called pellets) once a month when water temperature is above 50°F. For light muck buildup, use 1 tablet for up to a 1,000 gallon pond. For thick muck or for a more rapid fix, apply 2 tablets once a month. Muck Defense works best at removing sludge and scum from small rocks and gravel on the pond floor. Muck Defense will reduce the pond gunk in your freshwater pond, including your stream and waterfall. Consistent use will reduce pond maintenance and eliminate the need for extreme measures such as dredge work for the removal of muck accumulation. products provide better care for your pond, resulting in a cleaner and more balanced ecosystem. offers many solutions to help you get rid of your pond problems. Muck Defense works well in combination with other natural products to treat ponds such as Clarity Max, which offers phosphate control and improved water clarity. Also use with Nature's Defense, a bacteria treatment designed to maintain pristine water.
Highly Concentrated Pond Sludge & Muck Reducer -- Muck Defense tablets digest accumulated organic debris, known as pond muck, that resides at the bottom of your water garden, koi pond, or fishpond.
Beneficial Bacteria Removes Muck From Liners & Rocks -- Ideal for removing hard to reach muck from rocks and gravel at the bottom of your pond. Routine treatment will reduce pond maintenance time.
Eliminates Noxious Odors -- As the specially formulated bacteria consumes sludge and excess nutrients, your water clarity will improve and you will eliminate any foul odor or noxious smell.
Easy to Apply -- Simply toss dissolvable tablets into water, and they will sink below the surface, releasing hungry beneficial bacteria that instantly begins digesting dead organic debris and waste.
Safe for Animals & the Environment -- All-natural bacteria. When used in accordance with label directions, Muck Defense is completely safe for fish, plants, pets, birds, snails, and aquatic wildlife.