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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.

Porous, fused silicate media for efficient biological filtrationCreates and maintains optimum conditions for beneficial bacteriaGreat for layering in canister filters, wet/dry filter, and power filtersBio-Glass is made from natural silicate fused at a high temperature. Its pore structure is similar to that of loose soil, making it optimal for the colonization and growth of microorganisms. Its porous structure gives it up to 8 times more surface area, compared to other bio-rings. Great for a wide variety of filtration systems like submersible, canister, wet-dry, and power filters. For fresh or saltwater aquariums.Please click on "More Information" for FAQ's regarding biological filter media.

Porous, fused silicate media for efficient biological filtrationCreates and maintains optimum conditions for beneficial bacteriaGreat for layering in canister filters, wet/dry filter, and power filtersBio-Glass is made from natural silicate fused at a high temperature. Its pore structure is similar to that of loose soil, making it optimal for the colonization and growth of microorganisms. Its porous structure gives it up to 8 times more surface area, compared to other bio-rings. Great for a wide variety of filtration systems like submersible, canister, wet-dry, and power filters. For fresh or saltwater aquariums.Please click on "More Information" for FAQ's regarding biological filter media.

Bio-Foam provides an extreme amount of surface area for optimal biological filtration. Kits fit Whisper Power filters and Whisper In-Tank Filters. Each includes foam and a plastic frame. For best results, replace media according to manufacturer's recommended maintenance schedule.

Bio-Foam provides an extreme amount of surface area for optimal biological filtration. Kits fit Whisper Power filters and Whisper In-Tank Filters. Each includes foam and a plastic frame. For best results, replace media according to manufacturer's recommended maintenance schedule.

Bio-Foam provides an extreme amount of surface area for optimal biological filtration. Kits fit Whisper Power filters and Whisper In-Tank Filters. Each includes foam and a plastic frame. For best results, replace media according to manufacturer's recommended maintenance schedule.