The Haws model 9084 is an immersible Cleansing Stick that gives continual protection against pathogenic bacteria for water storage systems. It balances the PH of the water preventing the build-up of bio-film, scale and corrosion for up to 3 years with proper usage. This non-chemical disinfecting module is designed to be immersed in a water tank to provide constant protection from bio-film and hazardous levels of pathogenic bacteria, including Legionella. The Cleansing Stick will treat up to 2000 liters. Dimensions: 81.3 cm long x 7.5 cm in diameter.