Thanks Wack. I sorta thought 4-6 weeks myself, or until there are 4 internodal spaces. I'm growing out 50 seeds in the hope of locating a good mother. I'm going to sprout the seeds, put them in rockwool, and begin growing them in flats until the roots burst through. They then go into my aero system, I'll veg. them for 2 weeks or so (assuming 2 weeks in the flats) and put them onto 12/12