Royal Critical Automatic RQS

It's either calcium or potassium deficiency. You probably have the correct amounts so I would try altering your ph a little. Try ph 6.3. Also check your runoff ph to see if its still in range.

Hi there. Nice looking plant. I would say 3 to 4 weeks left. But your target of 30g will be smashed. At least 48g. If you let her bulk up and don't chop to early you will have a very nice plant for harvest. Keep your eye on the trichomes on the buds, not leaves, you want all these to be cloudy before you think of flushing her out. I usually wait until all cloudy with about 5% amber before I flush for a few days to a week, usually most my pistils have gone from white to brown aswell. Good luck. Patience is key at this point.