Unbranded 8 Pack Aquarium Replacement Filter Cartridge Fish Tank Filter Cartridge Aquarium Internal Filter (Large) 8 Pack Filter Cartridge L

Pack of 8: For optimal performance, we suggest you to change the cartridge at least every 4 weeks.<br>Excellent Filtration Performance: The filter cartridges are made of premium cotton, activated carbon and built-in biological grids, which can effectivly remove odors and discoloration, and promote the growth of beneficial bacteria, to maintain a healthy aquatic environment.<br>Easy Installation: filter cartridges are designed to be easily inserted or replaced; You only need to remove the dirty cartridge and insert a new one. Please turn off the power when replacing the cartridge.<br>Fits Aquarium Internal Filter (AQ025): Size Small/Medium/Large will fit Aquarium Internal Filter 79 GPH/120 GPH/172 GPH respectively.<br>Wide Application：Suitable for freshwater and saltwater aquariums， provide 24 Hour Professional After-sales Service. Please don’t hesitate to contact us to get help.