About This

• Easy Installation and Maintenance: Once you get fishkeeper aquarium filter cartridge, they're good to use. Just wash the filter cartridge with cold water to rinse any dust before use. After that, fit the filter cartridge into the filter's slot, ensuring complete insertion for effective filtering
• 4 in 1 Filtration System,Clear Water Made Simple: The updated aquarium filter cartridge of our product has a four - layer filtering structure. The closely - knit double - sided sponge is capable of capturing debris and fish feces, getting rid of large - sized granular impurities. Moreover, activated carbon is added to adsorb odors, and processed zeolite is included to effectively filter impurities in the water, rapidly providing a clean living environment for your aquatic organisms
• Powerful Zeolite: Zeolite, a highly polar adsorbent, effectively absorb impurities and suspended particles in water, enhancing clarity. Its natural ion - exchange ability eliminates heavy metals and ammonium. In water treatment, it reduces eutrophication, and balances pH. (Note: Zeolite turns black when mixed with activated carbon)
• Large Replacement Filter Cartridge,Work Perfectly With Whisper Bio-bag Filters: fishkeeper large sized filter cartridge is fully compatible with Whisper External Filter PF20, 30,40,60; Whisper ExternaI IQ20,30,45,60; Whisper 20i & 40i Internal Filter. Our large - sized fish tank filter replacement is a convenient and dependable choice for your filter replacement needs
• Multiple Sizes and Packaging Options to Meet Your Diverse Needs：Fish filter cartridge is available in 2 sizes, M and L. The medium - sized filter replacement measures 3.77 inches × 5.43 inches(length × height), while the large - sized filter replacement measures 5.1 inches × 6.7 inches(length × height). We offer different packaging quantities for your convenience. The fish filter cartridge come in packs of 6, 10, or 16 pieces, whether you choose the medium or large size