Check the listing for details. Aqua Meds Sludge & Muck Remover Beneficial Bacteria. Condition: New. Listed at 42.49 USD. AquaMeds® specializes in water treatments focusing on Koi care and beneficial pond bacteria, consulting with an expert veterinarian on aquaculture health and nutrition.Sludge & Muck Remover is a natural beneficial bacteria specially designed to treat organic debris in rock and gravel bottomed ponds. Rocks and gravel can make it difficult to remove organic debris, fish waste, and leftover food from the pond, but bacteria does it well. 100% natural bacteria; contains no chemicals, antibiotics, or medicationsRemoves phosphorus from the pondReduces odors and yellowing of pond waterSafe for plants, pets, and wildlifeApplication Instructions Turn off UV sterilizer for 48 hours after application. Apply every 2 weeks. Mix dry bacteria with pond water and disperse around the pond, especially in areas with good circulation. Maintain aeration during treatment. Discontinue using when water drops below 50°F. Initial TreatmentMaintenance Treatment2 ounces per 1,000 gallons 1 ounce per 1,000 gallons