Highly concentrated to clear cloudy water fast and restore water to sparkling blue. You only need 1 ounce per 5,000 gallons. Binds together small suspended particles so they can be easily removed by filter. No diluting needed. Recommended for weekly use and when pool water clouds from suspended debris. Use in all pool types. In SoftSwim® treated pools, use SoftSwim Filter Cleaner prior to application of Polysheen Blue. Easy-to-use squirt top bottle.(specially formulated polymers)