This is a 3 pack of Fluval FX5 Filter Foam Block Pads (A228) for the Fluval FX5 Aquarium Canister Filter System (A218). These Fluval foam pad filters are used as a mechanical filter media in the Fluval FX5 Aquarium Canister Filter System.
These Fluval foam block pad replacements for the Fluval FX5 Aquarium Filter are made with porous foam to trap large particles, debris, and impurities such as dirt, sediment, sand, rust, limscale, dust, hair, and more. Fluval foam filters reduce the amount of particulate matter in your aquarium to help your aquatic pets thrive better. They are especially suited for large capacity aquariums and also enhance the biological filtration stage of the Fluval FX5.
Fluval FX5 foam block filter replacements should be changed approximately every 2-3 months, though they can be rinsed clean between filter changes to extend filter life.
This three pack of Fluval foam pad replacement filters are known by Hagen part number A228. They can be used in both freshwater and marine aquariums.