Aqueon Filter Cartridge Large 6 Pack as well as high-quality marine

as well as high-quality marine pellets or flakes

Do not clean Bioholster when replacing the cartridge as it contains beneficial biological bacteria

which avoids disrupting the nitrogen cycle and is essential for maintaining clean and healthy water

Customizable filtration – OASE offers additional chemical media cartridges that can be added to the BioStyle filter based on your aquarium needs

Aqueon Filter Cartridge Large 6 Pack as well as high-quality marineAqueon Replacement Filter Cartridges are dual sided, featuring dense floss with over 25% more activated carbon than the leading brands. These patented cartridges were designed to ensure even distribution of activated carbon. To use, simply rinse under cold water and easily install using the "FRONT" orientation tab. Aqueon Replacement Cartridges are available in: X Small, Small, Medium and Large. Replace cartridges every 4 weeks for optimal performance.