The TUNZE® Silence recirculating pumps combine all the benefits you may expect from modern, powerful recirculation pumps for seawater and freshwater aquariums. Quality is the focus to give many years of continuous operation with low maintenance requirements. The TUNZE® recirculation pumps Silence are made in accordance with the strictest international safety standards. Pump output: 300 to 3,000 l/h (80 to 790 US gal./h) Energy consumption: 16 to 42 W (18 to 47 W) Pumping head: 3 m (118 in.), ¾" NPT hose connection. Voltage / frequency: 230V/50Hz (115V/60Hz). Cable length: 2,2 m (86.6 in.) Dimensions without outlet and suction cups: 118 x 94 x 75 mm (4.6 x 3.7 x 2.9 in.)