Protect your pool this winter and guarantee an easy spring opening when you use the Clearview Winter Pool Closing Kit. This winterizing chemical kit is perfect for smaller pools up to 15,000 gallons. The Winter Sleeper Pool Closer includes: an algaecide clarifier, surface protector and chlorine-free shock packs.Clearview ChlorFREE 15 is a chlorine-free pool shock that turns chloramines into active chlorine. This shock is non-bleaching and compatible with all treatment systems: chlorine, bromine, copper, silver ionization and chlorine generators.Mineral Magnet is a pool maintenance chemical that removes metals from the water and metal stains and scale from the surface. This product is also compatible with all water treatment systems.Poly Power 30 is a highly concentrated pool algaecide used to treat mustard, black and blue-green algae in chlorine or bromine pools. This powerful algaecide is non-foaming and non-metallic.