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I have used a similar method of growing plants that I am working on now and am wondering if this is considered a hydroponics system or just a growing system.
I currently have benches set up much like stairs three high. They are made with cinder blocks and 8inch wide pieces of wood. My idea is as follows take a large piece of pond liner and cover the benches. Use some strips of wood to make boarders on the edges of the bench to keep the water from flowing off the benches. At the bottom will be a catch trough made out of cinder blocks, a pump will take the water from the bottom trough and circulate it to the top out of a drip holes. I may use a capillary mat if the water flow is not even enough. Once the system is running trays of plants will be set on the steps of the bench and water will be flowing underneath them. Root hormone and fertilizer will be added as needed. Now is this system a hydroponics system? How is it different and are their any problems I would face growing plants in this system??
Here is a pictures of similar benches I have been working on.
Click the image for an enlarged view.
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