No, for us bio-filtration is bio-mitigation. Today a lot of people talk about organic accumulation. For me, there are two things: organic and dissolved nutrients. The seaweeds are a good case of dissolved nutrient bio-mitigation. We use these nutrients because seaweeds need dissolved nitrogen and dissolved phosphorus and many other dissolved compounds. We use these extra nutrients to grow seaweeds. They grow faster when they are close to the salmon cages. So there is both bio-filtration--recovery of the nutrients--and having at the same time all the crops for diversifying aquaculture production. We do the two at the same time, and it's the same with shellfish.
On February 13th, 2012. See this statement in context.