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with aero you need to make sure the roots have enough room to support the plant size you ish to grow. We did aero too because its easier to maintain. I built a dual 600 watt 52" x 52" x 90" this past weekend. Best w/ verts to have at least 2 lights so you have the light hitting the plant from at least 2 directions. We used 6"pvc as the downtube and 8" fingers that come off them with foan holders for the plant. Plants will be big though 4 levels, bottom 2 levels (pvc pipe" are close to that the bottom can be trained so the plants go all the way to the floor. Total 32 plants.
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