Keeps ponds clean and clear! - 1 Quart Specially Formulated for Decorative Fish Ponds, Lagoons & Smaller Water Features Contains photosynthetic bacteria which reduces cloudy water by promoting flocculation (clumping) and settling of organic and inorganic particles. Seeds and maintains biological filters Improves dissolved oxygen levels Digests organic sludge Reduces ammonia nitrogen levels Reduces build-up of bird droppings, fish food, and dead leaves Reduces most noxious odors including hydrogen sulfide Safe for fish and plants Continued biological activity even in water temperatures under 55°F. (12°C.) Application Rates Pond Size(Gallons) 1st Application(purge) Next 4 Weeks(once per week) Maintenance(once per month) 80-200 8 oz. 2 oz. 2 oz. 201-500 10 oz. 3 oz. 3 oz. 501-1,000 14 oz. 5 oz. 5 oz. 1,001-1500 18 oz. 6 oz. 6 oz. 1501-2500 24 oz. 8 oz. 8 oz. 2501-3500 28 oz. 10 oz. 10 oz. 3501-5000 32 oz. 12 oz. 12 oz. 5001-7500 40 oz. 16 oz. 16 oz. 7501-10000 48 oz. 20 oz. 20 oz. Product Video