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Originally Posted by vandula what is the h-pvc-tubing for? is this to distribute the air from the pump? is the water mister to help moisture up the dangling roots? |
No...DWC is aeroponics.
They are normally self contained units. A rubbermaid tote works great. You fill em up about 3/4 way to the top with water and nutes, throw a pond pump (250gph or so) in there, build a PVC manifold (don't even need glue), screw in sprayers, get air pumps (not o2 pumps) like for aquariums and get the longest airstones you can find, put them at the bottom and run the air lines out to the air pumps.
You then cut 4 to 6 holes in the lid, drop in 3" net pots filled w/hydroton. Drop in clones or rapid-rooter plugs w/seedlings. The sprayers provide highly aerated water and nutrients to the roots as the plant grows. When the roots hit the water, the sprayers have little impact. The roots then bask in highly nutrient/aerated water. Plants can grow much faster and larger using this method. They typically harvest much better as well.
However, there it is a lot more involved. You need to keep an eye on your PH, PPM daily. If your water gets warm, you have to watch out for root rot and other bacteria issues.
