2 X 1300 GPH Aquarium Circulation Fish Pump Wave Maker Powerhead with Magnatic Mount Total flow rate: 2600 GPH (1300 GPH each), 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 suitable for aquarium glass up to 5/8" (15 mm.) thick, Easy installations, Magnet is specially covered to prevent corrosion Recommend aquarium size: 65~130 gallons (each wave maker)