Recirculating Aquaculture Production Systems Today

In a RAS facility, the journey begins in the rearing tank. Here, fish live in high densities, eating and producing waste. In an open system, this waste would flow out into the environment. In RAS, the water is on a constant treadmill. It leaves the tank carrying uneaten food and metabolic byproducts, beginning its transformation back into life-sustaining liquid. The Filtration Gauntlet

The water, now cleaner than when it started, is pumped back into the fish tanks. This cycle repeats endlessly, with some systems recycling over 99% of their total volume daily. The Human Element Recirculating aquaculture production systems

After the biofilter, the water is "polished." It passes through degassers to strip out carbon dioxide and UV sterilizers or ozone generators to kill any lurking pathogens. Finally, pure oxygen is injected, bringing the levels far higher than what nature could provide. In a RAS facility, the journey begins in the rearing tank