Barney's G13 Haze

Day 2: Watered with pH 6.5 water without nutrients. he plants were topped creating 8 main branches in total per plant. Day 4: Watered with water supplemented with nutrients, pH 6.5. Day 5: LST was adjusted. Day 6: Bottom fan leaves were defoliated. I noticed a few white spots on some fan leaves. I am not sure if these are residual water spots or some kind of fungus, maybe powdery mildew? I will have to keep an eye on the leaves to see if they appear again. I increased the air flow in the tent to lower the humidity. Day 7: Watered with pH 6.5 water. No sign of additional white spots. LST adjusted.