BioGuard Polysheen Blue is a water clarifier that is used to clear up cloudy water fast. It works on small suspended particles in the water. This product is highly concentrated, so a little goes a long way. It can be used with all pool and filter types and does not affect pH level. This product also assists in the filtration of cloudy water. Restore your pool water to sparkling blue with Polysheen Blue. Product Dosage 1 fl oz per 5,000 gallons of water per week. Directions Apply Polysheen Blue at a rate of 1 oz. per 5,000 gallons of pool water. Apply slowly and directly into water while walking around de Allow pump and filter to operate for at least 8 hours after application. If after 36 hours the water is still cloudy reapply at a rate of 1 oz. per 5,000 gallons of pool water.