Oase AquaOxy 450 Air Pump, Heavy-Duty, 110 to 120 V, 30 mA, 60 Hz Frequency, 25 W Power, 3.6 psi Pressure, (2) 4.5 mm Dia x 16 ft Connection, Hose Connection, 450 gph Flow Rate, 15 ft Cord Length, Horizontal, Vertical Mounting, ABS Housing Material, Dimensions: 9 x 9 x 5 in, Suitable for: 5000 gal Ponds, Includes: (2) Airstones