Septicfit calcium hypochlorite tablets are US EPA Registered (US EPA Reg. No. 86460-4) for use in Aerobic Treatment Systems and other Septic, Sewage and Waste Water Applications. The potent Septicfit tablet formulation reduces 99% of bacteria within the first ten minutes of contact. Septicfit tablets are formulated to achieve dependable and effective chlorine disinfection for residential and commercial wastewater treatment systems. Septicfit tablets are designed for the unpredictable flow rates that are associated with aerobic septic systems. When used as directed, in an approved tablet feeder, this product allows the system to meet state and local regulatory disinfection requirements. Septicfit tablets can be used in all aerobic/wastewater treatment systems utilizing approved tablet feeders. Septicfit disinfecting tablets are packaged in easy to open, resealable 29 tablet SuperCube. 68% Calcium Hypochlorite 65% available chlorine 2.5 inches in diameter Nominal Weight 155 grams per tablet NOT FOR USE IN SWIMMING POOLS