Aeration and circulation for effective aquaculture pond management

Abstract Aeration and circulation are two separate processes, each of which greatly affect aquaculture pond dynamics. Aeration or the addition of supplemental oxygen to the pond water provides adequate aerobic conditions to support aquatic life and improve water quality. Circulation, on the other hand, does not directly add oxygen to the pond but can influence aeration by redistributing oxygen and affecting oxygen transfer. Both aeration and circulation are necessary to prevent the natural aging of pond soil condition and water quality. An effective management strategy would include both aeration and circulation. The benefits of such a system are extended life of pond, improved pond soil and water quality, uniform temperature and DO distribution from surface to bottom, reduced anoxic sediment layer, and improved habitat for production.