Is there anything I can do to help bulk up the buds during the last 2-3 weeks of flowering? Ppm runoff 900.

Ppm going in was 555 at 6.5 ph, I have tap water that when it's jus plain water the ppm between 350-380.

I did cut out Nitrogen I had a feeling I did too early, I'll give a light feeding then jus ph the rest of the way thank you all for the advice

You need some mag , the best in this stage is sugar cane extract that is rich in Mg , i use botanicare product

What is the ppm going in.. your run off is good. I'd feed (you might have cut the nitrigen a little too early.) What's your ph.. theirs a litle imbalance some sewhere. . Have yiu cut back on calmag? I'd want thebleaf to start loking lije that.. next week. But i dougt adding anything anything will pack a impressive diffrence. I'd feed it oneblast time and let her finish and deplete