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3-stage filtration in a single cartridge Baffle floss filter bag prevents carbon from settling Clamshell frame locks securely to contain filter media Disposable, baffle floss/carbon bag provides mechanical and chemical filtration and prevents carbon from settling. Also includes one reusable aerobic sponge for superior biological filtration and one reusable clamshell frame for easy slide-in installation in Emperor 280 and 400 filters.Please click on "More Information" for installation instructions.

3-stage filtration in a single cartridge Baffle floss filter bag prevents carbon from settling Clamshell frame locks securely to contain filter media Disposable, baffle floss/carbon bag provides mechanical and chemical filtration and prevents carbon from settling. Also includes one reusable aerobic sponge for superior biological filtration and one reusable clamshell frame for easy slide-in installation in Emperor 280 and 400 filters.Please click on "More Information" for installation instructions.

3-stage filtration in a single cartridge Baffle floss bag prevents carbon from settling Clamshell frame locks securely to contain media Disposable, baffle floss/carbon bag provides mechanical and chemical filtration and prevents carbon from settling. Also includes one reusable aerobic sponge for superior biological filtration and one clamshell frame for easy slide-in installation in Penguin filters. Fits Penguin 125 and 150, Regent Aquatech 10-20, Neptune 20, and Penguin 170, 200, 330, and 350.Please click on "More Information" for installation instructions.

3-stage filtration in a single cartridge Baffle floss bag prevents carbon from settling Clamshell frame locks securely to contain media Disposable, baffle floss/carbon bag provides mechanical and chemical filtration and prevents carbon from settling. Also includes one reusable aerobic sponge for superior biological filtration and one clamshell frame for easy slide-in installation in Penguin filters. Fits Penguin 125 and 150, Regent Aquatech 10-20, Neptune 20, and Penguin 170, 200, 330, and 350.Please click on "More Information" for installation instructions.

3-stage filtration in a single cartridge Baffle floss bag prevents carbon from settling Clamshell frame locks securely to contain media Disposable, baffle floss/carbon bag provides mechanical and chemical filtration and prevents carbon from settling. Also includes one reusable aerobic sponge for superior biological filtration and one clamshell frame for easy slide-in installation in Penguin filters. Fits Penguin 125 and 150, Regent Aquatech 10-20, Neptune 20, and Penguin 170, 200, 330, and 350.Please click on "More Information" for installation instructions.

3-stage filtration in a single cartridge Baffle floss bag prevents carbon from settling Clamshell frame locks securely to contain media Disposable, baffle floss/carbon bag provides mechanical and chemical filtration and prevents carbon from settling. Also includes one reusable aerobic sponge for superior biological filtration and one clamshell frame for easy slide-in installation in Penguin filters. Fits Penguin 125 and 150, Regent Aquatech 10-20, Neptune 20, and Penguin 170, 200, 330, and 350.Please click on "More Information" for installation instructions.

3-stage filtration in a single cartridgeBaffle floss bag prevents carbon from settlingClamshell frame locks securely to contain mediaDisposable, baffle floss/carbon bag provides mechanical and chemical filtration and prevents carbon from settling. Also includes one reusable aerobic sponge for superior biological filtration and one reusable clamshell frame for easy slide-in installation in Drs. Foster and Smith Bio System Power Filters and Whisper filters. Junior fits Bio System Power Filter Model 15, Whisper E, Jr, 10, and Whisper In-Tank Filters 10i. Regular fits Bio System Power Filter Model 25, 35, 55, 75, Whisper C, 1, 2, 3, 20, 30, 40, 60, and all Triad filters.Please click on "More Information" for installation instructions.

3-stage filtration in a single cartridgeBaffle floss bag prevents carbon from settlingClamshell frame locks securely to contain mediaDisposable, baffle floss/carbon bag provides mechanical and chemical filtration and prevents carbon from settling. Also includes one reusable aerobic sponge for superior biological filtration and one reusable clamshell frame for easy slide-in installation in Drs. Foster and Smith Bio System Power Filters and Whisper filters. Junior fits Bio System Power Filter Model 15, Whisper E, Jr, 10, and Whisper In-Tank Filters 10i. Regular fits Bio System Power Filter Model 25, 35, 55, 75, Whisper C, 1, 2, 3, 20, 30, 40, 60, and all Triad filters.Please click on "More Information" for installation instructions.

3-stage filtration in a single cartridgeBaffle floss bag prevents carbon from settlingClamshell frame locks securely to contain mediaDisposable, baffle floss/carbon bag provides mechanical and chemical filtration and prevents carbon from settling. Also includes one reusable aerobic sponge for superior biological filtration and one reusable clamshell frame for easy slide-in installation in Drs. Foster and Smith Bio System Power Filters and Whisper filters. Junior fits Bio System Power Filter Model 15, Whisper E, Jr, 10, and Whisper In-Tank Filters 10i. Regular fits Bio System Power Filter Model 25, 35, 55, 75, Whisper C, 1, 2, 3, 20, 30, 40, 60, and all Triad filters.Please click on "More Information" for installation instructions.