For marine aquariums up to 2,000 liters (528 USgal.) depending on the coral population. Energy consumption: 17 W (25 W) Voltage / frequency: 230V/50Hz (115V/60Hz) Cable length: 2.2 m (86.6″) External operation or in a cabinet (recommended), self-priming. Filling quantity: 10 liters (2.6 USgal.), without filling Dimensions (L x W x H): 310 x 250 x 520 mm (12.2″ x 9.8″ x 20.5″)