By growing fish and tomatoes in the same ecosystem, the fish produce fertilizer for the tomatoes and the tomato plants clean the water for the fish. With this system, 1 kilo of fish food produces 1 kilo of fish and 10 to 12 kilo if tomatoes.
The video is in Swedish but you can see some of the facilities.
All the best, Leia
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Happy creating!
Tammie
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