Nute issues?

RCDW week 3. water temp 68, ppm 1150. Ph 5.8-6.1. room temp 78. RH 55% . Silica, hydroguard, cal-mag. General hydro. Micro, veg and flower. 2 photos. 2 autos. 3rd crop. Former 2 crops no issues. Everything the same. Have flushed twice. Yellowing starts with spots. leaves curling in. View attachment KIMG0931.JPGView attachment KIMG0930.JPG

The pic doesn't show much of the plant, but it doesnt look too bad to me, but its hard to tell from such a limited pic.

Your stats look ok, but I've no idea what "ppm 1150 " means as I just use EC to calculate nute stregnth.