The Blue Stuff® does everything "The Pink Stuff" does and more. The Blue Stuff®'s proprietary blend actually removes copper from the water. The Blue Stuff® is also very stable in higher chlorine levels and can be used in many fountain and water feature applications. Dosage: Initially, add one quart (32oz.) per 10,000 gallons of pool water then 6 - 8 oz. per 10,000 gallons of water per week for maintenance.