Robust-Aire systems provide deep water aeration for ponds and lakes. Compressed air is injected into the bottom of a pond to create a continuous upward flow of water mixing thousands of gallons of water with little energy expenditure. This rising current of air bubbles brings low-oxygen water to the surface where it expels harmful gasses and re-oxygenates. Temperature layers are disrupted and fish are able to inhabit the entire water column. Effective for ponds with depths of 8 ft or more, and more effective at aerating deep water ponds than fountains or surface aerators.