@depressedfuckup: I see that you made this video based on what the pond is made out of. A few days ago I saw one fish farmer setup his pond in a large body of water. I don’t understand exactly how he did it, but he basically isolated and built a cage in some sort of river, allowing the pond and the lake to exchange water, but using a net to keep the fish from reuniting with the lake. It was an interesting discovery for me.