PolyQuest is a highly concentrated chelating agent which chemically coats minerals such as copper (from heaters) and iron (from well water).
While the pool is circulating, 4 ounces per 10,000 gallons is all it takes!
This product is used with PolyClear Maxipolish, Polycide 50 and Poly Shock in a non-chlorine system to maintain sparkling clear water.
Please not that this system is not compatible with chlorine or bromine.