Key Features Strong and clear glass pipework Fits 16mm flexible pipes Inlet provides an effective floating surface skimmer Adjustable inlet at the base to allow for varied flow and functions Lily Shaped outlet provides a soft and calm return of water. Suction cups provided for easy fixing or moving New to the Aquascaper range from Evolution Aqua is the 12 or 16mm Glass Pipework system, a complete tubing network for use in any Aquarium. The glass inlet and outlet sets provide an almost invisible viewing experience, while still carrying out the vital functions of the filtration system in your tank. The Inlet pipe has a floating surface skimmer that moves with the water level and effectively removes surface film and scum. This helps to improve the gaseous exchange at the water surface while efficiently removing floating organics. The base of the Inlet pipe has an adjuster, allowing the direction of water flow to go straight through the surface skimmer or remain at the bottom strainer to