That is what a sog grow is all about. If you haven't yet you need to view Al B Fucts Journal, Get A Harvest Every To Weeks. It's required reading. Just the first 10 or twelve pages and of course A Batch of Clones In Rockwool as well. He has this theory he has been working with for the last 8 years or so. When I started viewing his method he was harvesting 13 to 16 oz every two weeks with an 8-9 week flowering plant, Sweet Tooth #4. Now he is averaging 24 zips every two weeks, maybe more, I haven't looked at the fiqures since he installed the cool tubes on his lights which should be another improvement. I can't catch him because he won't stand still. But, I do have some plans of my own forming. He better watch his back, I am coming for him. LOL. VV