Stainless Steel Lily Pipe w/ surface skimmer 16/22 mmHigh quality stainless Steel Lily pipe with surface skimmer. It consists of 2 major parts, the inflow and outflow pipes. These pipes are used to increase water movement in lower parts of the aquarium where water can easily become stagnant. The feature of the outflow pipe is to create powerful flowrate for stronger currents without disturbing the aquascape in the aquarium. it's also suitable for Marine aquarium. Hose clips included.