What's the def, and is it to late

What's up,riu these are my special kush#1 plants,they are in too ( true living organics)soil that has been reused.They did pretty good through veg,and ok up until about two weeks ago.im thinking it's phosphorus, or potassium def, or mavbe salt buildup. I flushed them last night incase its salt buildup. I feed them only ewc,molasses, tea with little all purpose. And flower power nutes from too, which is all organic nutes .so could someone help me out is it too lte to save them they are about 4 weeks in

picture? I too may have a similar case with my plants.

lol ..

Da Bro's!
Where's fat Freddy's cat?
Must be stole the pic's.

Trying to post pics phone won't let me