Super Metal Control helps to eliminate iron, copper and manganese, staining and discoloration. This product has also been shown to be effect at aiding in the removing of recent metal stains. Product Dosage Pool Openings: 3 fl oz per 1,000 gallons of water. Discolored Water - Less than 1 ppm of minerals: 3 fl oz per 1,000 gallons of water. Discolored Water - Greater than 1 ppm of minerals: 32 fl oz per 10,000 gallons of water. Directions New Pools or Pool Openings: To prevent discoloration of the pool water due to trace amounts of iron, copper, manganese and other heavy metals, add 3 ounces for each 1,000 gallon of water. This addition should be made before any other chemicals are added. Recirculate the water to ensure uniform distribution, before proceeding with other chemical additions. Discolored Water: If the pool water has less than 1 ppm of minerals add 3 fl oz of Super Metal Control per 1,000 gallons of water. For mineral amounts greater than 1 ppm, ad 1 quart of Super Metal Control per 10,000 gallons of water. Apply directly to the pool with the pump running. Maximum recommended dose is 3 quarts per 10,000 gallons of water. If the pool is shocked wait 24 to 48 hours before applying this product to obtain maximum effectiveness. Product should be added 7 days prior to superchlorination to minimize staining potential. Treat the ph of the water after addition and adjust to 7.2 - 7.6, as necessary. Recirculate the water to ensure uniform distribution.