Marineland SeaClone 100 Protein Skimmer harnesses the forces of nature to efficiently remove dissolved organics and waste from your marine aquarium. SeaClones exclusive Turbo-Venturi Injector System mixes filtered water and air in the pump impeller chamber, creating millions of micro-bubbles for maximum skimming efficiency and improved gas exchange. Air and water swirl together in the Vortex Reaction Chamber, creating a powerful "cyclone" effect that rapidly draws dissolved wastes from aquarium water. Comes complete with powerful Maxi-Jet 1200 Pump. It requires no airstones and is more efficient than air-driven protein skimmers. Functions as either a external hang-on or internal sump model. Great for all marine aquariums up to 100 gallons. Shipping weight: 6 lbs.