71-78F temp range. 38%-58% humidity range Coco medium, Fed daily to runoff with 6ml Flora Micro 9ml Flora Bloom 3ml Cal-Mag at 5.8ph 5-6 Week old seedlings. Couple 3 week old clones. Light is 24" above canopy. Running dimmed at about 250W. 90 CRI 3500K 3x3x6 grow tent About half of the plants now have purple/red stalks/stems and I can't seem to figure out why.