Saturday, 7 November 2015

fish and food : home production

Source: Grove
Grove Ecosystem

this is an interesting photo: the outflow of the fish tank is used as a fertilizer for the top unit, where plants and vegetables are grown in house.

The retail price is extremely high but the underlying concept is rather ancient: use the poo of your pets to fertilize the plants.

Why do you need to spend $4,500 ? I do not know...

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