Sludge Digester (1 Gal) - Liquid Pond Muck & Sludge Remover - Treats up to 128,000 Gallons - Beneficial Bacteria & Enzyme Formula – Safe for Koi, Fish, Pets & Wildlife - 30+ Years Trusted

THE POND WORKS AGAINST YOU EVERY SEASON. SLUDGE DIGESTER WORKS BACK. Every pond accumulates organic waste — fish waste settles, leaves decay, dead algae sinks to the bottom — and over time that layer of muck gets thicker, shallower, and harder to ignore. It robs your pond of depth. It fuels foul odors. It stresses fish and disrupts the balance your water needs to stay clear and healthy. Most products attack this problem from the top down. Sludge Digester is different — it goes to work throughout the entire water column, from surface to sediment, delivering beneficial bacteria and enzymes exactly where the organic load is heaviest. FULL-POND COVERAGE THAT TABLETS AND PELLETS CAN'T MATCH Tablets and pellets sink to one spot and go to work there. That's fine for spot treatment — but it leaves the rest of your pond untouched. Sludge Digester's liquid formula disperses evenly across the entire water column the moment it's applied. Every corner, every cove, every shallow shelf along the shoreline gets full exposure to the same concentrated bacterial action. One pour, whole-pond coverage. No dead zones. One ounce treats 1,000 gallons — making Sludge Digester up to 5× more concentrated than leading tablet-based competitors. A single gallon covers up to 128,000 gallons of pond water. FORMULATED FOR THE FULL SPECTRUM OF POND ORGANIC WASTE Sludge Digester's proprietary enzyme and beneficial bacteria blend targets fish waste, dead algae, fallen leaves, decaying organic matter, and accumulated bottom sludge — breaking each down and reducing the muck layer over successive treatments, restoring pond depth and improving oxygen circulation naturally. SIMPLE DOSING. POUR AND GO. No scoops. No tablets to count. No mess. Measure and pour directly into your pond — the liquid formula disperses immediately on contact. Use 1 oz per 1,000 gallons every two weeks for problem ponds, weekly during peak summer months, and monthly for ongoing maintenance once your pond is balanced. For best results, apply when water temperature is above 50°F. For fall and winter pond care, pair with UltraClear Cold Water Blend to maintain a clean, balanced pond through every season. 100% NATURAL. SAFE FOR FISH, KOI, PETS, PLANTS & RECREATION. Contains no harsh chemicals or synthetic additives. Completely safe for koi, fish, aquatic plants, birds, wildlife, and pets. Your pond is safe for swimming and recreation immediately after application — no waiting period, no restrictions. TRUSTED BY POND OWNERS SINCE 1993. Over 30 years of science-backed, natural pond care. Used by backyard hobbyists, koi enthusiasts, professional pond managers, and commercial property owners nationwide. Every UltraClear product is built on one principle: effective pond care that's completely safe for the aquatic life and families you're protecting.

• 𝗨𝗽 𝘁𝗼 𝟱𝘅 𝗦𝘁𝗿𝗼𝗻𝗴𝗲𝗿 𝗗𝗼𝘀𝗶𝗻𝗴: One ounce of Sludge Digester treats 1,000 gallons, making it one of the most concentrated liquid sludge treatments on the market. A single gallon covers up to 128,000 gallons of pond water with no waste.
• 𝗙𝘂𝗹𝗹-𝗣𝗼𝗻𝗱 𝗟𝗶𝗾𝘂𝗶𝗱 𝗖𝗼𝘃𝗲𝗿𝗮𝗴𝗲 – 𝗡𝗼𝘁 𝗝𝘂𝘀𝘁 𝘁𝗵𝗲 𝗕𝗼𝘁𝘁𝗼𝗺: Unlike tablets and pellets that only act where they sink, Sludge Digester's liquid formula disperses evenly throughout the entire water column, breaking down muck, fish waste, and decaying debris at every depth from surface to sediment.
• 𝗥𝗲𝗱𝘂𝗰𝗲𝘀 𝗠𝘂𝗰𝗸, 𝗢𝗱𝗼𝗿𝘀 & 𝗢𝗿𝗴𝗮𝗻𝗶𝗰 𝗕𝘂𝗶𝗹𝗱𝘂𝗽: Proprietary blend of beneficial bacteria and enzymes digests fish waste, leaves, dead algae, and accumulated sediment, improving oxygen circulation, restoring pond depth, and clearing murky water over time.
• 𝟭𝟬𝟬% 𝗡𝗮𝘁𝘂𝗿𝗮𝗹 – 𝗦𝗮𝗳𝗲 𝗳𝗼𝗿 𝗙𝗶𝘀𝗵, 𝗞𝗼𝗶 & 𝗙𝗮𝗺𝗶𝗹𝘆: Contains no harsh chemicals. Completely safe for koi, fish, aquatic plants, pets, birds, and wildlife. Pond remains safe for swimming, fishing, and recreation immediately after application.
• 𝗕𝗮𝗰𝗸𝗲𝗱 𝗯𝘆 𝟯𝟬+ 𝗬𝗲𝗮𝗿𝘀 𝗼𝗳 𝗣𝗿𝗼𝘄𝗲𝗻 𝗥𝗲𝘀𝘂𝗹𝘁𝘀: Since 1993, UltraClear has been the trusted choice of pond professionals and backyard owners alike. Easy pour-and-dose application, no tablets to count, no pellets to scatter. Use every 2 weeks to start, monthly for maintenance.
• 𝗩𝗲𝗿𝘀𝗮𝘁𝗶𝗹𝗲 𝗳𝗼𝗿 𝗔𝗻𝘆 𝗣𝗼𝗻𝗱 𝗦𝗶𝘇𝗲 & 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻: Ideal for backyard koi ponds, water gardens, larger farm ponds, lake coves, and shoreline treatment. Whether you're managing a 1,000-gallon ornamental pond or a multi-acre property, Sludge Digester scales to your needs with simple pour-and-dose application.
• 𝗣𝗲𝗮𝗸-𝗦𝗲𝗮𝘀𝗼𝗻 𝗣𝗼𝘄𝗲𝗿, 𝗬𝗲𝗮𝗿-𝗥𝗼𝘂𝗻𝗱 𝗦𝘆𝘀𝘁𝗲𝗺: Sludge Digester is optimized for warm-water performance — when bacteria are most active and organic buildup is at its worst. For fall and winter pond care, pair with UltraClear Cold Water Complete to maintain a clean, balanced pond through every season.
• 𝗦𝘂𝗽𝗽𝗼𝗿𝘁𝘀 𝗮 𝗛𝗲𝗮𝗹𝘁𝗵𝗶𝗲𝗿 𝗣𝗼𝗻𝗱 𝗘𝗰𝗼𝘀𝘆𝘀𝘁𝗲𝗺: By reducing organic load, Sludge Digester helps improve oxygen levels, reduce ammonia and excess nutrients, and create better conditions for fish, plants, and aquatic life — not just cleaner water, but a more balanced, thriving pond environment.
• 𝗔𝗺𝗲𝗿𝗶𝗰𝗮𝗻 𝗢𝘄𝗻𝗲𝗱, 𝗔𝗺𝗲𝗿𝗶𝗰𝗮𝗻 𝗠𝗮𝗱𝗲: Proudly manufactured in the USA and supported by over 30 years of trusted pond care expertise.