Pool Mate 1-Quart 2-Pack Concentrated Metal Out Stain and Mineral Inhibitor, Pool Metal Remover, Stain Remover, Made in USABrand: Pool Mate Color: Pool Features: 1 quart per 10,000 gallons of water Helps remove and prevent calcium, cobalt, copper, iron, lead, manganese, nickel and silver This product helps prevent discoloration of pool water due to iron, calcium, manganese, copper and other metals and minerals which may be present in the water supply This product is an excellent general purpose sequestrant which helps protect plumbing and pool walls from rust, stain and