Rdwc
RO water
GH 3part+calmag, total ppm 1200
50 days old, still in Veg
79f lights on, 63f off. 35-50%RH
PH checked daily, has not been over 6.2 or under 5.6.
2 1k MH lights 22" above canopys
I have 8 plants in the system. 3 other plants show the same issue but very light, only on 1 or 2...