EHEIM professional 3 represents high quality, strong performance, excellent power efficiency, smooth operation, and lots of additional benefits. Self-priming, a large prefilter and safety hose adapters are just some of the advantages. Features: Top quality external filter for aquariums up to 1200 litres The first filter with a triple hose adapter (2x suction side, 1x pressure side) for perfect water circulation in large aquariums Flow indicator - indicates when the filter should be cleaned Transport wheels enable the filter to be moved Prefilter tray - for "drip-free" transport of the prefilter during cleaning Square canister for large filter volume and high stability High flow rate with very low energy consumption Adjustable pump output Whisper-quiet operation and extremely long service life thanks to high-performance ceramics in the pump drive Suction aid for fast filling of the filter canister Safety hose adapter can only be released when the valves are closed Large prefilter retains coarse dirt and extends the cleaning intervals of the biological filter material; easy to remove and clean Suction aidNo more complicated suction methods! With the suction aid, the filter canister is filled and immediately ready to start.Safety Hose AdapterHose adapter with 3 hoses. For safety reasons, the hose adapter can only be released when the valves are closed.PrefilterA large prefilter, positioned in the top of the canister, retains coarse dirt and can be cleaned quickly between maintenance intervals. This protects the biological filter material in the other 3 filter baskets, providing a much longer service life.Filter basketsThe filter baskets can be filled individually and are easily removed for cleaning.Quiet operationEHEIM High Performance Ceramics, i.e. components made of high-performance ceramics (impellor axles and bearings), mean exceptionally quiet operation, high load capacity and extremely long service life.Ready for connectionAll essential accessories are included: suction pipe, nozzle pipe, outlet bend, EHEIM quality hose, prefilter tray and installation accessories. Eheim Professionel 3 1200XL Specification: For aquariums sized 400 - 1200 Litres Flow Rate 1700 lph Max Head Height 2.6 m Power Use 25 Watt Canister Volume 25 Litres Intake Hose Diameter 16/22 mm Outlet Hose Diameter 16/22 mm Dimensions (mm) 567 x 330 x 330 (Height x Width x Depth) Suitable for aquarium types Fresh & Saltwater Manufacturer Guarantee 3 Years