Im 8 weeks into a soilless grow. Still in veg but 2 plants are sarting to show female pre-flowers. Only nuts have been FF Big Grow. PH is 6.7. 18/6 cfl. 55% humidity with fan. On one plant I am starting to see small white spots. I looked on the back of the leafs fom spider mites with a 30x loop and saw nothing. today I found a white spot that was a chrystal. Any input or thoughts ?
PH is a little high that will become a proble down the road. google powdery mildew and check some pix and see if its the same, also are you seeing THC crystals?