Biocides and Algaecides for use in contained bodies of water, such as pools and spas and the like; biocides and algaecides for use in industrial and re-circulating water systems such as water cooling systems, waste water systems and the like

water treatment chemicals for use in contained bodies of water, such as pools and spas, and the like; water treatment chemicals for use in industrial and recirculating water systems, such as water cooling systems, waste water systems, and the like