The SeaClone protein skimmer utilizes the forces of nature to effectively draw wastes out of your aquarium. The tornado-like motion inside the SeaClone protein skimmer removes organic wastes from your aquarium. The SeaClone protein skimmer has been developed and tested in different aquarium environments. As a result, its design is simple and user-friendly. SeaClone requires no airstones and is more efficient than air-driven protein skimmers. SeaCloneTM protein skimmer has versatile dual design - it functions as either a external hang-on or internal sump model. A Maxi-Jet PH aquarium pump is included with each SeaClone protein skimmer. SeaClone 100 For marine aquariums up to 100 gallons.