Horizontal aspirator aeration is an electric motor-driven propeller-type horizontal aspirating aeration. The aerator consists of an electric motor drive above the water surface. The motor is connected to a hollow shaft within a protective housing positioned at a 45-degree angle downward into the water. The shaft is connected and drives a propeller below the water surface. The aerator induces the flow of atmospheric air below the surface of the water and provides flow-linkage mixing in multiple unit arrangements.