This refillable filter comes as just the shell to be filled with DI Resin carbon, phosphate remover, or other chemical medias. It fits units made for Aquarium Life Support Systems and other 2.5 bt 1″ standard canisters Standard 10 x 2.5″ empty refillable cartridge is used for granulated carbon and deionization resin. Use with standard 10″ filter housing filter housings.
