RAS is a fully controlled and enclosed environment constantly removing CO2, particles and nutrients. When utilising freshwater in production, the removed particles can be used to produce a high value organic fertiliser. In fact, this is a regenerative system that produces more organic fertiliser than is needed to produce the fish feed itself.
When producing saltwater species like salmon, Flow Through Reuse systems provide a sustainable landbased alternative to RAS utilizing seawater for production. Typically, a RAS system reuses 99,9% of the water while Reuse systems reuse 30-50 %, requiring a less technology intensive system set-up. Both systems provide excellent rearing conditions and water quality.
We believe the key to a sustainable future is learning from nature and embracing the regenerative revolution. Our RAS technology has an optimal design with premium water quality leading to excellent fish health with no viruses, parasites or diseases to worry about.
One Eyvi RAS facility of approximately 27,000m2 provides 10,000 tons of fish per annum – which equates to 25 million dinner portions a year. To provide a daily meal of 250g of fish to 9 billion people, would require only 0.1% of US land area. This shows that it is possible to feed the world sustainably and responsibly.
RAS uses less land, less water and less feed than required to produce other sources of protein. For example, to produce 1kg of fish requires 109,000 times less land than needed for 1kg of beef. Additionally, the water needed to produce 1kg of beef will support up to 33kg of fish, and the feed needed to produce 1kg of beef would yield approximately 8kg of fish.