Generic Aquarium Filter Cartridge Fits Whisper PF C,1,2,3 / Dynaflo 2,20,150, 310&450 - Pack of 2
These cartridges are made of high quality materials to provide chemical, mechanical and biological filtration.
Rinse cartridges gently with tap water to remove carbon dust before use.
After some use, wash with plain water to restore performance
Replace cartridges when restricted flow is observed. Cartridge life will depend upon fish population and biological load.
PRO TIP - When replacing cartridge leave some fibers of the old one to promote fast growth of beneficial bacteria.
* Whisper is a registered trademark of Tetra/Second Nature. Dynaflo is a registered trademark of Hagen Corp.