Flow rate: 160 gphConnections: 3/4" ID hose fits inlet / 1/2" ID hose fits outlet7.5 WattsDimensions: 3.25" X 3.5" X 2User Manual (pdf file in new window)The Maxi Jet aquarium powerhead is ideal for powering undergravel filters or creating internal water movement from its fully rotational output. The Maxi Jet incorporates a venturi aeration device to provide optimal aeration and gas exchange in the aquarium. A silencer keeps the venturi aeration device operating quietly. An adjustable air filter permits the user to fine-tune air volume and water mixing as desired.