Pond Clean granules go to work instantly.The effects of the treatment are immediately apparent. Using the latest in oxygen technology, Pond Clean quickly restores your pond’s biological balance. - Cleans and clears pond water - Works on contact - Quickly cleans rocks and waterfalls - Prevents unsightly water conditions - Fast-acting formula is safe for fish, plants and invertebrates at the recommended dosage Size: 2.26 g (8 oz). Application Rates: • Heavy organic material: 3 – 16 tablespoons (45 g – 240 g) for every 1000 gallons (3785 L) of pond water. • Maintenance dosage: 1 – 5 teaspoons (5 g – 25 g) per 1000 gallons (3785 L) of pond water. • Spot treatment: 1 – 5 teaspoons (5 g – 25 g) per affected area. • Use weekly