I've never grown by reading a meter..I read the plant
I don't even own a ph/ppm meter
But I would suggest that your nute solution is off....I would personally foliar feed/spray a small amount of Epson clearing the mag and helping to hydrate them leaves.(I would do this every morning or night) N is causing the claw, you can see some of the smaller leaves dark green and clawing while fan leaves are deficient. Feed with a more traditional" bloom" fert with higher pk and imo your problems will be solved in about a week. Then add 1/8 tsp Epson per gallon after the foliar or if you prefer not to spray just put it in the water....