If your veggin I'd highly recommend you switch it back. Unless your really good at giving your plants the premium climate control. My buddy taught me it, grows very fast n vigorous, but IMO you get the same growth from 18/6.
So why switch back if it gives the same results, also if you have temp issues this would be helpful or stealth issues as you can run it at times when people aren't around (like my flower box : ), 12/5.5/1/5.5 saves you 5 hours of electric, to some people that's a lot of money over the grow cycle.
I have flowered results I just said that -___-
Will check out your thread, but 1 journal does not count as enough research to form a good opinion, for instance you may have lost yield but someone else might not have. But I do believe that 12/12 is optimum for flower as the plants use a lot of energy and the extra 3 hours or so (over 9 then reducing) gives them the extra 'boost'. As an energy saving measure the flower model is not as efficient