I just switched to 12/12 with my nirvana AK-48. I got 4 females about 2 feet tall with about 7 flowering buds per plant. The AK was very responsive in a positive way to "supercropping" and "pinching" pruning techniques. I am using a new lighting technique of MH bulbs, mixed with LEDs. I am very pleased. Shoot me some pics of that AK. I want to see where I will be in a few. Did you use any CO2 techniques? I will get some newer versions of my grow tomorrow.