What is lagoon aeration?

Aerators are simple devices that are meant to increase the amount of dissolved oxygen content of water. This is done by a shore positioned air compressor that feeds air down to a bottom mounted air diffuser. This diffuser blows out bubbles that rise to the surface. The rising air bubbles cause water near the bottom to also rise, pulling this colder water up to the surface. When this cold water reaches the surface it spreads out but then eventually sinks again, gaining oxygen from contact with the atmosphere in the process.  (source: satellitebeach.org)