help,flowering, spreading fast, what is it?

I have been flowering for 4 weeks now, at first i thought it was n deficiency but then over the last three days this happened.


the ph is 6.3, advanced sunshine #4

what your humidity? and did you flush at all?

to much N can cause lockout.

i didnt flush her. i usual get 10% run off so i thought there wouldnt be any build up

during the light on the humidity is like 30% when they are off around 55-60%

This looks like P-def to me, for whatever reason (PH, feeds, I don't know).
Just an opinion.

Phosphorus and Calcium look to be the culprits. Could be either under supplementation or pH imbalances from one feeding to the next.

I think you could use a little more P for a week or two.

Thanks I will give it a try.

.Up the flowering nutes 20% as its a bit pale.

ive had the same problem before and there isnt really anything you can do but wait to see if it will pull through cause it spreads quickly killing many leaves

try cutting the bad ones off so it isnt wasting any energy trying to help THOSE leaves