News features and technical articles about the evolution of aquaculture, one of the world’s fastest growing industries.


Innovation & Investment

Recirculating aquaculture technology, part 2

To start a biofilter together with a source of nitrifying bacteria, you must provide the conditions that will encourage the growth of the bacteria. The basic process requires initial preparation of water chemistry, adjustment of alkalinity to support bacterial growth 

Innovation & Investment

Important unit processes in recirculating systems

Recirculating aquaculture systems (RAS) are increasingly used to raise fingerlings for stocking large fish in more traditional production systems. A number of unit processes are critical to the design of successful RAS systems. 

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Oyster culture in recirculating systems

Environmental and other challenges have led to reduced harvests of wild oysters in the United States. In a study, the authors evaluated oysters cultured in a recirculating aquaculture system with zero water exchange for several months.