Octopus DNWB 200 Recirculating Skimmer by CoralVue. **** PRODUCT MANUAL **** Specifications: * Allows the user to input the exact amount of water desired to be skimmed. * Requires a feed pump or plumbed from an overflow to inject water into skimmer. * Internal or External use. * Modified funnel neck design with bubble plate diffuser. * Rating: Up to 300 gallons. * Diameter = 8" * Dimensions: 15.7″ x 12.6″ x 27.8″ * New pinwheel impeller increases the performance by 30%.