3200 GPH Aquarium Circulation Fish Pump Wave Maker Powerhead with Magnatic Mount Flow rate: 3200 GPH (12000L/H), Magnetic drive technology Totally submersible and oil-free motor to avoid pollution to the living circumstance 360 degree rotation to adjust flow in any direction Magnetic mounting system with articulating ball joints for versatile directions uitable for aquarium glass up to 5/8" (15 mm.) thick, Easy installations, Magnet is specially covered to prevent corrosion Recommend max aquarium size: 200 gallons