I'm also growing chrystal for the first time. It's 5 weeks in. Can't wait, it's fuckin enormous. Smells sweet and the head bud is big as a beer can. I vegged 8 weeks from the day seed popped. It's 4 feet tall. Hope it's done soon. I've heard anywhere from 52-70 days. We'll see. I also have their white rhino going too, same sched.
Fred