These high performance hang on protein skimmers are designed for use by hanging on the rim of your fish tank. Protein skimmers have a fairly simple design but achieve a very important task in your aquarium. Each protein skimmer comes complete with a submersible needle pump, which utilize needle-wheel technology for the finest bubbles. The surface tension from these bubbles attracts organic waste and carries it through the column; then it's "skimmed" into a collection cup for removal. All of our protein skimmers come with a needle wheel venturi pump included. This type of pump introduces air via the venturi air pipe and as the water is drawn through the needle wheel impeller it chops the incoming bubbles into a fine mist. Leading to a greater performance skimmer. Features Hang on protein skimmer Built in clamp for easy attachment to your tank 1850 L/H needle wheel venturi pump Adjustable flow rate Overflow pipe to avoid spillage Detachable collection cup for easy cleaning Low noise, high output Specifications For tanks up to 1000 Litres Pump flow rate: 1850 L/H Power: 35w Voltage: 220- 240v. Diimensiions: 216x186x600mm 12 Months warranty