At Northern Divine Aquafarms, we first used RAS to grow salmon smolts inl998.1his was before the term "RAS" was coined and we just called it "recirc". We soon realized that this technology allowed us to produce smolts six months earlier and three times as big when compared to our flow-through system. I remember thinking "why would you grow fish in anything else?' Lots of people had the same idea which led some to start growing fish right through to harvest in RAS.
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