I have them vegging right now they are about 2 1/2 - 3 feet tall, I think they are almost ready to flower. Is there certain stem thickness I should look for ? before I can switch to the sodium light 12/12?
At 2 1/2 - 3 feet they are definitely ready for flower. You're going to have some monsters on your hands!
WOW! Yeah, I'd flower as soon as possible because most strains will double, triple, even quadruple in height during the 12/12 flowering stretch. My indica last grow tripled.
i started flowering at roughly 1 ft. i hope you got some space becuse these things grow like your debt on coke once you start flowering
See if you can tie them down anywhere because i dont know how many places have nine to twelve foot ceilings lol. They are going to be straight out of the jungle! awesome! Good luck