Originally published in Hatchery Feed and Management Vol 9 Issue 2 2021
Tom Scrope, Nova Q Ltd.
How Recirculating Aquaculture System (RAS) managers can get the most out of their biofilter microbiome.
Active Microbiome Management (regularly adding functional bacteria) should be part of every RAS farmer's toolkit.
Recirculating Aquaculture Systems (RAS) can help make aquaculture more sustainable – whether in the much-hyped full-grow out systems or for hatchery, smolt, and now post-smolt production of Atlantic Salmon.
Not only do RAS have a low direct environmental impact (especially if renewable power sources are available), but they provide optimal growing conditions. They can reduce mortality and improve feed conversion ratios, reducing the overall emissions per kilo produced. Improvements that can make RAS more efficient and reliable will play a key role in making the aquaculture industry more environmentally sustainable.