Maintain a healthy and thriving aquatic environment with more ease and less mess using the Aqueon QuietFlow Internal Filter with SmartClean Technology. Featuring innovative SmartClean Technology, this filter allows you to quickly perform partial water changes without removing the filter, reducing mess and simplifying the process. Its quiet operation ensures a peaceful environment for both you and your aquatic life. The Bio-Holster cartridge holder provides a space for beneficial bacteria that break down waste, while the Aqueon EcoRenew cartridge is made from fibers infused with carbon to remove pollutants, organic debris and odor from the water. Both the cartridge and holster feature a NoDrip design to help eliminate water spills when changing cartridges. Designed for versatility, the adjustable flow rate supports a range of freshwater and saltwater aquarium sizes. The uses Aqueon QuietFlow Internal Filter with SmartClean Technology uses Aqueon EcoRenew Replacement Filter Cartridges and is available in extra small, small and medium sizes.