Powered internal protein skimmer for saltwater aquaria up to 250L. Two mounting modes make it suitable for many different styles of aquarium. Features DC Runner 1.3 Ultra Silent Air Wheel pump 24v DC. Power consumption 7 watts. Very quiet operation with low maintenance. Foam and flow is adjustable at the skimmer and by the pump controller. Dimensions: L 14 x W 8 x H 36.5cm. Immersion depth: app. 23cm (to bottom of outflow).