Week ending 08/27. So after a full week of only PH'd water, the Dark purple has fully rebounded from what I believed to be a Nitrogen toxicity. Leaves no longer hook down and fan right out. Switching back to a nutrient schedule in the coming week. Went an extra day without water but they really didn't suffer, did some light defoliation of discolored leaves. Also dropped the lights to about 18 inches above the tallest plant.