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I used these cheap boards just to test the idea, and never replaced them, too busy bongsmilie cutting-edge technology:

In another forum , some people doubted that air can actually pass through the soil, so I took a picture per second to measure the flow. you can watch it here: https://public.fotki.com/okiki/aeration/aeration.html It is 180L/h (47 gal/h) per pot, or 130 m3/day (5000 ft3/day) for the whole box ...

Thanks xMaYHeM ! What kind of photo do you need ? Normally it's very simple, one side of the board lays on the border of the pots, the other side lays on screws..

Hello everyone, 3 years ago, I built a box and made a little modification for improving the soil aeration. I would like share this experience and maybe get some help for questions I have. Description of my material: box surface is 1.25m x 2.5m (~3 m2) and 2.20m high. 3 x 600 W HPS bulbs, 3...