The only real reason I want to go into flowering after 3 weeks is because i only have 6' of height to work with and really only 5' from soil level, and I hear these like to stretch alot. on other forums people were saying go 12/12 right from the start to keep them lower. They're at their 7th node right now so they should be relativley close to alternating by the end of the week anyway. I just don't want them to stretch fill the cabinet and still have 6 weeks left on them. Next grow will be some indicas that i can veg out for a longer time. Appreciate the input and nice comments reaper!!