Nature2 Nature 2 Express Vessel and Cartridge for In-Ground Pools W20086

Copper and silver minerals significantly reduce the number of chemicals needed to sanitize your pool Installs easily on 1.5-inch or 2-inch rigid PVC pipe plumbing Works in pools up to 25,000 gallons, for larger in-ground pools, install 2 units Cartridge should be replaced every season or after 6 months of continuous use For use with Inground pools only