Abstract: A bubble diffusion aerator mounted onto a "pot" aerator, for oxygenating a body of water. The bubble diffusion aerator comprises spiral coils of perforated flexible tubing mounted onto a flat frame, with a single air feed line connected to the tubing at a point equidistant from the tubing ends for uniform air pressure. The frame has openings to provide a continuous flow of oxygen-deficient water across the coiled tubing. The "pot" aerator has a vertical pipe with an air feed line, with the vertical pipe mounted on a base. The diffusion aerator is mounted to the vertical pipe of the "pot" aerator at a position up off the water body bottom, minimizing air hole clogging and bottom sediment disturbance. Each aerator has a separate air feed line connected to an air compressor on shore. The aerators can be operated independently, running only the diffusion aerator for air/water transfer, running only the pot aerator to create water movement, or running both to maximize the benefits of each aerator.