After trialing a made-in-BC semi-closed technology solution at its farms off the Sunshine Coast region, Grieg Seafood BC Ltd. (Grieg) has announced it will be proceeding with the installation of these semi-closed system at all three of its farms in Esperanza Inlet, off the west coast of Vancouver Island. The new CO2L Flow system (pronounced Cool Flow) is a form of semi-closed containment, which allows for farmers to raise or lower custom designed farm enclosures – ensuring the farm-raised fish benefit from natural ocean conditions, while also providing protection for wild salmon. The system has been used successfully to rear several generations of fish at Grieg’s farms in the Sunshine Coast region. In all the trials, farmers noted better growth, lower mortality, better feed conversion rates (meaning the fish are more effective at converting feed into growth), and a dramatic reduction in the need for sea lice treatments.