![]() The water trickles down through the roots of the plants, gathering oxygen from the air as it falls back into the tank. A small pump draws nutrient-rich water from the fish tank to the tops of the vertical columns. The system puts fish waste to work as fertilizer for crops. And it uses a small fraction of the water needed to grow crops in soil. One five-foot tower can produce more than 200 heads of lettuce per year. By growing vertically, you can produce about twice the amount of plants as you can with a hydroponic system of the same area. What it isĪ vertical aquaponic system grows vegetables without soil in columns above a fish tank. ![]() We published a version of this how-to guide at, and it's one of the good ones, so we'd like to share it with Instructables, too. Sean Brady, the aquaponics projects coordinator at the Center for Sustainable Aquaponics and Nourish the Planet in Loveland, Colo., showed us how to build a system from scrap he found around the greenhouse. This low-cost vertical aquaponic system can grow leafy greens, herbs and raise fish for a small family year round, and it fits in a 5' by 3' space.
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