Czarixa Medium Aquarium EcoRenew Filter Cartridges for Aqueon QuietFlow Internal Filter with SmartClean Technology 30G and SmartClean Filters 10-20G, Replacement Fish Tank Filters 6 PcsBrand: Czarixa Color: Black Features: EcoRenew Filter Cartridge Replacement for: This pack of 6 medium replacement aquarium eco renew filter cartridges compatible with QuietFlow Internal Power Filter with SmartClean Technology 30 Gallon and Aqueon SmartClean Power Filter with EcoRenew Filter Cartridge 20 Gallon. Measuring 4. 37 x 4. 02 inches 11. 1 x 10. 2 cm, these aquarium filter cartridges ensure compatibility with your fish tank accessories