16 Pack PF-S Fish Tank Filter Cartridges, Aquarium Filter Cartridges Replacement Compatible with Top Fin Silenstream PF10 Power FiltersBrand: ELCCOTYA Color: White Features: Filter Cartridges for Aquarium Filtration: The PFS Fish Tank Filter Cartridges is 5. 5 inches in length and 3. 1 inches in width, Compatible with Top Fin PF10 Power Filters, Dedicated to the clarity of the water and the healthy environment of the fish. Easy Installation in a few seconds: First remove the used filter element, and then rinse the new filter element with clean water to remove the dust, and finally