Big airflow and low noise: the SES range of BUYO air pumps have an aluminum casing for long life and good heat dissipation. They are quiet running and are perfect for large aquariums, ponds and hydroponic/aquaponics systems. They have an internal aluminum casing for the motor and a polymer composite rubber air chamber. They boast high strength and good heat dissipation as well as a long operational lifespan. They have a unique waterproof design making them perfect for outdoor use as well as large aquariums and fish tanks.