(I used to grow some peppers and tomatoes too this way, I understand the attraction in it). When you set up a hydroponic system like that, the cost side of the

(I used to grow some peppers and tomatoes too this way, I understand the attraction in it). When you set up a hydroponic system like that, the cost side of the argument in the OP changes dramatically though. Then it becomes a real 'hobby' in the sense that it costs more than you can possibly get out of it (unless you grow marihuana in it - ironically, the most information I could find on hydroponics was in books for marihuana growers, and the shop I got my supplies from sells their stuff mostly to that audience and demos their gear by growing peppers in them. The first time I came there the guy was quite excited to speak to someone who didn't intend to grow marihuana).