In The Swim Pool Winterizing Closing Chemical Kit - Up to 7,500 Gallons For use with pools up to 7,500 gallons only Kits use chlorine-free chemicals that will not stain or bleach liners Slow-release floater keeps your pool oxidized all winter long Not for use in pools on a biguanide based sanitizing system Includes: 1 qt. winterizer, 1 qt. winter stain-away, 1 lb. chlorine-free shock, 1 winter sorb and 1 winter pool floater