coma777answered grow question 2 years ago yep, I was already thinking of adding cal-mag, and so done, I'm not really checking the ph cause I'm doing organic, and on the label says is ph adjusted already..
but last week I was concerned and I already gave them some more acid water.. I flushed them lightly, and hope this help and for the next watering I'm giving pure water and cal mag and we'll see.
anyway the yellowing and browning isn't proceeding for now and it's limited on lower fan leaves so I'm not too worried