The Ecocage is a floating, semi closed, heavy duty, closed containment aquaculture production system. The Ecocage can be used both for production of postsmolts for transfer to open cages or for a full production cycle from smolt to harvest.
The floating collar holds a fabric bag made from one of the worlds strongest heavy duty textile membranes ever made. Inside the fabric bag is an ordinary net pen for extra security and easy collection of the fish. Water is collected at depth through four pipes and pumped into the bag at four positions creating a circular current. Oxygen is continuously added to the inflowing water creating optimal and stable environment for fish health, zero lice, high survival, low FCR and high growth
in the Ecocage. During three postsmolt production cycles in the Ecocage at Sulefisk in western Norway sea lice infection was negligible and no delousing treatment necessary.
The water outlet is at the bottom of the fabric bag where the outflowing water is separated in a primary and a secondary flow. The waste is collected from the secondary flow and is either
transferred to a land based waste treatment plant or a floating reservoir which is periodically emptied and the waste transported to a centralised treatment plant. The water temperature inside the Ecocage can be optimised by collecting water from varying depths according to hydrographic conditions. Electricity and oxygen supply is secured through a three level backup system. Production of postsmolts or full production cycle from smolts to harvest in the Ecocage will significantly
reduce costs, increase production and increase profitability compared to today’s open net pen concepts. Our long experience and know-how has resulted in simple and efficient operational routines with high security.
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