Elegant and easy to use, the Hydor Performer skimmer range is built with high precision CNC machined parts made with top quality materials for versatile applications in marine and reef aquariums. O-Ring on collection cup fitting, drainage and all connections. Assembled by hand and tested 100%. The Performer is a complete skimmer package that includes a foaming pump, a venturi silencer and silicon air tubes, a special drainage system. The new SELTZ foaming pumps is equipped with a new lubrication system, and innovative Rotormix brush impeller.