1st indoor grow:RQS PurpleQueen/Critical

So far the necrotic spots have been reducing daily in expansion rate. It seems like the low pH was the cause of the P, Ca and K blockades, it bothers me greatly that i picked up on this so late, and that my girls are in this current shape. The pH in the middle and lower regions of the pots are still around 5.5 to 5.7, the upper layers seem to have a rather high pH, i assume the more i water, the more of this pH will start going down in the pots and in turn raise the pH in the lower regions, as well as reducing it in the higher regions of the pots. I'm planning on giving grow fertilizer for the last time in this coming week, while doing this i will measure the pH of the water, and add pH plus if this is necessary. The roots of the girls don't seem to be having any problem with the 1.5ml of pH plus i gave previous week. they appear white and healthy in the top layer of the soil.