Epdpekc 8Pcs Aquarium Filter, Compatible for 30-60/20-40 Power Filters, Replacement for EZ-Change 3

[Strong adsorption]: Contains premium activated carbon, which can capture fine particles or dust in the water, removes the odors, water discoloration and impurities [High quality Activated carbon]: Activated carbon can prevent odor, water discoloration and impurities from your aquarium, provide clean and fresh water for healthier fish. [Easy to install]: Easy to use, easy to replace and no need assemble, changes in seconds just shake and rinse. [Compatible]: Aquarium filter compatible with for ez-change # 3 aquarium filter, fit for 20-40, 30-60 power filters. [Reusable]: The aquarium filter is washable . It is recommended to replace it every 2-4 weeks to that the water quality of the aquarium is clear.