Aqueon QuietFlow® Internal Shrimp Filters are specially designed for freshwater aquariums containing shrimp, small fish and other invertebrates. This filter includes a protective intake grid and pre-filter foam sponge that prevents livestock from entering the filter housing. Maintenance is easy, simply remove, rinse and replace the intake grid and pre-filter. Each unit is preloaded with a replaceable Aqueon carbon cartridge. For easy placement, both hanging clips and suction cups are provided; use the hanging clips for aquariums with top frames and suction cups for frameless aquariums.