Fishing Auxiliary Machinery Aerator Paddle Wheel Aerators for Seawater and Freshwater. High Oxygenation Capacity: Special impeller increases oxygenation capacity by 10% at the same power. Energy Saving Motor: Super high efficiency permanent magnet variable frequency motor saves over 30% energy. Corrosion Resistant Design: Stainless steel submersible motor and fasteners ensure anti-rust and anti-oxidation. Water-Cooled Motor: Unique water guide plate design provides excellent motor cooling effect. Stable Operation: No movement during operation reduces energy consumption and maintenance costs. Easy Installation: Integrated motor control design makes installation fast and simple. Quality Certifications: Product holds CE certificate and SGS certificate report. Customized Service: We offer customized service and can use customer's nameplate for gearboxes.