With a nutrient recovery system, bioreactors, for the fish sludge, we think that we can get close to not having any supplemental nutrients for the plants. It de

With a nutrient recovery system, bioreactors, for the fish sludge, we think that we can get close to not having any supplemental nutrients for the plants. It depends on the content of the fish feed, the groundwater used etc. Exactly how close to zero time will tell, we are seeing great potential. The key is that the nutrients need to exist in the system in the first place and when you harvest something, you take things out. How do you put what is needed back? We see that a very large portion can be done with circular biological systems. We have been working to incorporate food waste via insects. We take allowed food waste and feed insect larvae. There are several teams in Sweden working on this together, with some government support. I haven't seen the "fermented plant juice" before, but the principle is the same, let bacteria work on it.