First, I'd like to express my sincere thanks to all who have posted and generously given of their time and knowledge. I haven't seen this problem addressed, although I'm not all that computer literate, so please excuse. My hubby acquired 2 400w HPS street lamps and we have built quite a little grow room. The flowereing area is 5x8,we do vegging under florescents (sep. area) and rooting/cloning area (separate). This is my 4th grow in soiless mix and we're transitioning to hydro, so we have both soilless and hydro vegging, and a crop (#3) harvesting now. Things are pretty crowded at the moment! Using Humbolt products (Love Them!) Had a pretty bad spider mite problem on grow 2 that was solved very well by Sucrashield (organic), needless to say the harvest was still good, but deminished none the less. Harvest 3 is looking good, but the colas and amounts per plant are not as I had hoped. I've decided to try scrogging, bending and tying, getting the lights closer (internode space), and adding some bud boosters for harvest #4 (the strain is Master Kush). Here's the question-do you think this will solve the problem, do I need bigger lights, better reflectors? Thanks!