When to harvest ?

Your bud looks done. You are In your harvest window now. Now to about a week from now. Your ripeness depends on you really. As far as a flush goes, it helps reduce harshness that can be in plant from nutrients. Enjoy.

yeah if i would go with organic i wouldn't flush maybe. But I used advanced nutrients and i taste my plant. It had lots of headache and had breath problems so flush should be apply for syntetic nutrients in my opinion..

I don't ever flush my plants... I did it once and decided it was a waste of time. It's really a personal preference whether you do or you don't. That being said, I think you've got at least 2 or 3 weeks left... Good luck