pawfly 7 w 254 gph commercial air pump 4 outlets manifold quiet oxygen aerator pump for aquarium pond pawfly <b>cutting-edge ultra quiet mc-3000 commercial air pump </b><br><br> the revolutionary design makes the pump compact, high efficiency, powerful and very reliable. it features ultra quiet operation, low energy consumption, no lubrication requirements and easy maintenance. <br> it oxygenates your aquarium / pond with adjustable high / low mode and 4 outlet air lever control distributor.<br><br> measures 5 x 5 x 3.3 inches and weighs 3.2 pounds. suitable for use in any freshwater and marine water. ideal for aquarium, fish tanks, koi pond, winterization, hatcheries, waste water treatment and protein skimmers. <br><br> <b>specifications: </b><br><br> recommended tank size: 300 to 500 gallons<br> voltage: 110 - 120 v; 50 / 60 hz <br> output: 254 gallon per hour <br> power: 8 w<br> pressure: 0.022 mpa.<br> noise: < 40 db<br> dimensions: 125 x 120 x 85 mm