The Fluval A424 is a combination filter for use in the following aquarium filtration systems:
The Hagen A424 - Fluval G6 Tri-X Filter Cartridge removes phosphate, nitrates, and organic waste from aquariums. This Tri-X filter Controls algae flare-ups, dirty water, and low oxygen levels. This Fluval G6 replacement neutralizes ammonia and other animal waste in your aquarium water. This Fluval G6 filter traps ions so they can't leak back into aquarium water. This Fluval cartridge is for use with freshwater aquariums.
The Fluval A424 specifications: