With all respect BB a closed loop system is like placing 20 gallons of gas in your living room and waiting for a spark. The cost of purifying water down to the micro level is huge which is why hatcheries use them on a limited bases. Yes they work but the cost is massive so not much of a chance of being used yet. Get the price of the technology down and good to go.

That is the greatest mistake we make in my mind. Rather than scream the sky is falling a concerted effort to develop the technology to rear seafood with aquaculture is needed. It is the one thing that would reduce pressure on natural salmonids. Get the price down and the commercials will disappear slowly but steadily.

Then remember the enviros made a deal with the devil and joined with the commercials. Sometimes Winston can be wrong as this time " the enemy of my enemy is my freind " is not working this time around.