The perfect combination of quiet operation, small size, high performance, high quality components and low operating cost. Best performance-to-volume ratio on the market. Magnetic mount. 360 degree adjustable flow. Pure ceramic bearings reduce noise and extend life. Pre-lubricated and self-cleaning impeller. Silicone wire protection. 13 watts for 8000 liters per hour. Suitable for marine tanks up to 550L or freshwater tanks up to 900L.