Extremely quiet, titanium centrifugal pump (less than 30 db)NOTE: This pump will increase the aquarium's water temperature by 46°FFlow rate: 1,225 gph (@ 3 feet)Max head: 18 feetConnections: 1" hose barbFor external use onlyCirculation pump6 foot power cordPerformance charts (new window)Equipped with mounting bracket sealless/leakproof designMade with noryl housings and impeller, titanium or stainless rotor and separating wall, ceramic bearing ball, carbon graphite bearing cap and EPDM o-ring"Dry Run Cutout with thermal switch for added safety