Urban farming: Salad greens (Vegetables) and Fish.


Russell Beard finds out about a highly efficient closed-loop system known as ‘aquaponics’, where fish and vegetables grow symbiotically. This means produce and protein can be cultivated sustainably and profitably in cities. Founded by Will Allen, an ex-professional basketball player-turned-urban agriculturalist, Growing Power is an urban farm with a difference in Milwaukie, Wisconsin.

At their 0.8 hectare inner-city plot you will not only find vegetables and salad greens, but fish tanks holding 10,000 fish each whose waste is used to fertilise the plants. Growing Power’s headquarters is said to be the most productive farm of its size in the US mid-west, and it trains hundreds of volunteers from around the world each year.

Inspired by this approach, a group of entrepreneurs have now set up their own commercial aquaponics farm in a nearby industrial wasteland. Sweet Water Organics sell their tilapia, perch and salad greens to local restaurants and shops, and are planning to expand the operation to produce six times more food than they currently do – using half as much energy.

Aquaponics gaining popularity

There are many reasons why backyard Aquapronics has joined the likes of chicken raising, as a very popular backyard project for so many families. While backyard aquaponics may sound like a trendy new concept, its roots go back thousands of years. It is origins may be traced back up to the Aztecs and past Egyptian and Far Eastern finishes. This ancient method of farming essentially aggregated fish producing with crop culture. While these ancient backyard aquaponics processes have been accommodated to modern positions, the basic conception still utilizes.

So, why has the “growing of the future” construct convert so common?      As you could already recognize, backyard aquaponics is a process of cultivating both crops and fish in a ascertained, closed loop surround. In abstract terms you are combination “aquaculture”, fish growing, with “hydroponics”, acquiring plants without soil. Merely how does backyard aquaponics work?

While you keep fish in tanks, their waste productions build up in the water in which they are enduring and finally accomplish toxic charges. Merely what is inedible for the fish, is really sustaining for plants. They virtually expand on it. So, in backyard aquaponics you carry the infected water to containers where plants are supported with their roots dropping in water.

The constituted assimilate the nutrients that they require from the water, which in this case, are the waste chemicals from the

fish tank. In arranging of backyard aquaponics, they take out these contaminants, basically cleansing the water of the toxins