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
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.
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.
Trials with recirculating shrimp nursery systems in India supported the use of biofloc. To control ammonia is a way to reduce filtration costs.
U.S. institutions are collaborating to evaluate low-energy recirculating aquaculture system designs to produce marine finfish in a low-salinity environment.