Keep your aquarium water crystal-clear and your fish healthy with this 9-pack of Samnija PF-S replacement filter cartridges, compatible with Top Fin PF10 Silenstream and PF-S power filters. Each filter features a 4-layer filtration system made of cotton, activated carbon, and zeolite media, designed to efficiently remove debris, odors, and impurities from your tank. Product Features: ? Compatible with Top Fin PF-S and Silenstream PF10 models ? 9-pack ? economical bulk replacement set ? 4-layer filtration: cotton, activated carbon, and zeolite ? Promotes clean, healthy water and aquatic life ? Easy to install and replace ? just rinse and insert ? Replace every 2 to 4 weeks for optimal performance Condition: New in box Made in China aquarium filter cartridges, Top Fin PF-S replacement, Silenstream PF10 filters, fish tank filter media, activated carbon, zeolite filter, aquarium supplies, bulk filter pack