Koralia NANO 240 High Flow Power Head by Hydor. Unique patented* magnet + suction cup support included! Incredible stability in any position in aquariums with glass up to 15mm thick. Magnet is specially covered to prevent corrosion. Adjustable flow direction! The special sphere shaped connection makes flow directing quick, simple and fully adjustable. High performance, low energy consumption! Unique patented* impellers designed by Hydor guarantee exceptional hydraulic performance with low energy consumption. Koralia NANO Power Head Specifications: * Flow Rate: 240 gph * Power Consumption: 3.5 W * Dimensions: 2" x 3"