For marine aquariums up to 1,200 liters (317 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: 1,850 ml (488.7 USgal.), without filling Dimensions (L x W x H): 230 x 150 x 350 mm (9.1″ x 5.9″ x 13.8″)