This is your first grow right? Looking real nice. With reguards to the yellow leaves, it's completely natural don't worry about a thing. I am in my first grow right now, can't wait to start flowering. I will check up on your thread and see the end result. I have friends who say they got no bud that was sell-able from their first few harvests, looks like you are miles ahead of them!

Bee

P.S I live in Santa Cruz as well, wonder if we know each other!