Water purification chemicals contained in cartridges and dispensers for use in killing bacteria and algae in swimming pool, hot tub and spa; algaecides and bactericides for swimming pool, hot tubs and spas

Algaecides and bactericides for swimming pools, hot tubs and spas

Water purification materials contained in cartridges and dispensers, namely, algaecides and bactericides for use in killing bacteria and algae in swimming pools, hot tubs, and spas; algaecides and bactericides for swimming pools, hot tubs, and spas.