Aerator

A method of aeration by using an aerator, the aerator comprising a submersible mixing tube having a water inlet and an aerated water outlet, an inlet cowl of increasing diameter with respect to the diameter of the mixing tube coupled to the water inlet, and an aspirating tube penetrating the mixing tube between the water inlet and the aerated water outlet, the aspirating tube having an air outlet introducing air into the mixing tube and an air inlet drawing in air from atmosphere above a water surface and wherein the mixing tube comprises an outboard motor lower unit engagement to engage a lower unit of an outboard motor in use such that a propeller of the outboard motor lower unit locates entirely within the mixing tube with a midsection of the outboard motor extending from the outboard motor lower unit engagement such that, in use, the propeller of the outboard motor lower unit thrusts water past the air outlet thereby creating suction at the air inlet to draw air via the aspirating tube into the mixing tube to mix with the water and expel aerated water from the aerated water outlet, the method comprising inserting an outboard motor lower unit into the mixing tube such that the propeller thereof locates within the mixing tube such that the air outlet is positioned downstream of the propeller, the propeller powering the outboard motor to thrust water past the air inlet of the aspirating tube to aerate water.