I'm limited to growing inside only a PC case and am very fond of the LED idea, and not too very fond of CFLs. My pc case is 18" high, would http://www.ebay.com/itm/2012-100W-6Band-Lighthouse-Blackstar-2w-LED-Grow-Light-/290622447667?pt=LH_DefaultDomain_0&hash=item43aa72a033#ht_9268wt_1163 be too powerful ? Should I maybe get the 50W ? I plan to do 2-3 plant sog.