This week, Global News reported that Canadian cannabis producer Green Relief Inc is using fish to grow their marijuana plants. The aquaponics system combines aquaculture and hydroponics, raising tilapia fish in tanks where the cannabis plant's roots dangle in the water. Microbes then convert ammonia from the fish excrement into nutrients for the plants, which in turn filter the water, creating a sustainable closed-loop system.
It may seem strange at first glance, but co-founder Warren Bravo calls it “the agriculture of the future.” And he has good reason for saying so. It’s well-known that marijuana grows require a lot of H2O - some estimates say it takes around one gallon of water for each pound of processed bud produced. The aquaponics used by Green Relief use 90 percent less water than traditional grows, and yield 10 to 20 percent more bud.
And to top it all off, one of Green Relief’s 16 fish tanks is purged every five weeks, and the tilapia are then donated to a local homeless shelter.
To see the system in action, check out the video below.
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