75 Sq Ft Cartridge with Plug $172.16 75 Sq Ft Cartridge with Bypass Valve $172.16 75 Sq Ft Cartridge with Plug and 10 Tablet Brominator $192.58 75 Sq Ft. Cartridge with Bypass Valve 10 Tablet Brominator $192.58 100 Sq Ft Cartridge with Plug $180.76 100 Sq Ft Cartridge with Bypass Valve $180.76 100 Sq Ft Cartridge with Plug and 10 Tablet Brominator $209.81 100 Sq Ft Cartridge with Bypass Valve 10 Tablet Brominator $209.81