Switior Top Fin RF-L Filter Cartridge Aqurium Filter Cartridge Refill for Top Fin Desk Aquariums with Large Retraction Filter Pack of 8

Large filter cartridge for the upper fin: 8 pieces RF-L replacement filter cartridge. This filter cartridge is compatible with top fin desktop aquariums with large retraction filter. Size: 19 x 6.8 cm Efficient water purification: our filter cartridge is made of double high-density cotton, activated carbon, new filter media zeolite. Double high-density cotton can filter impurities and debris from the water. Triple activated carbon can effectively absorb 99% of dirt and odors. Zeolite further absorbs heavy metals and balances pH. Filter medium - zeolite: our zeolite is a reprocessed zeolite. Our spherical zeolite has a stronger cleaning ability and can adsorb heavy metals and other harmful ingredients. Balance the pH value to achieve a stable water condition and improve the efficiency of fertilising aquatic plants Quick installation: turn off the filter and remove the used cartridge and rinse the new cartridge under water to remove dust. After rinsing, insert the cartridge into the rinse chamber and make sure that the filter cartridge fits completely into the chamber High-quality filter cartridges: We are committed to using high-quality filter materials to efficiently clean water impurities. And we recommend you change the filter every 2 to 4 weeks