Easy to use, efficient, and eco-friendly describes Aqueon QuietFlow Internal Power Filters with SmartClean technology. SmartClean technology provides quick and easy water change to help improve water quality. Installation is quick and easy; they are self-priming and include both hanging clips for use with framed aquariums and suction cups for use with frameless aquariums. The filter includes a bioholster for beneficial bacteria to grow (biological filtration) and Aqueon EcoRenew cartridge made from sustainable fibers and infused with carbon and features a NoDrip design that helps to eliminate water mess when changing. The QuietFlow E Internal Filter with SmartClean technology also includes an adjustable flow rate feature to cover a range of aquarium sizes. Features: SmartClean technology provides quick and easy water change to help improve water quality for a clean and clear aquarium Includes Aqueon EcoRenew cartridge that is sustainable, biodegradable, and fully compostable Easy to install using included suction cups or clips Auto-start pump requires no priming, automatically restarts if power is interrupted and restored Adjustable flow rates for 15-30G fresh or saltwater aquarium 75-150 GPH Change cartridge every 4 weeks using Medium Aqueon EcoRenew Cartridge Includes: (1) 30 g Filter Intended Pet(s): Fish Capacity: 30 g Product Weight: 0.76 lb Instructions: Instruction manual included. Aqueon QuietFlow Internal Aquarium Tank Filter, Size: 30 Gal | PetSmart