Right now I am using a 4x2 space to grow 11 plants under a hydroponics drip system. Was thinking about doing more plants in the same space. Just wanting to know how much space in between plants should I be leaving? I've seen many setups where there isn't much space but the plant turn out looks great. Thinking about doing a setup like this http://www.progressive-growth.com/prodimages/pipedreams32_large.jpg customized to fit in the 4x2 space. Any suggestions on how many plants I could fit in this space, maximized? Was thinking anywhere between 32 - 40 plants in this space. Will this be okay?