What amendments for your teas? It looks like a cal/mag deficiency... too much potassium, trying using crushed oyster shells for calcium. Are you using any Bone meal?
Did you do a big P/k boost? And what sort of nutrients are you adding?
BTW yes Im growing TLO super soil/ started with rock wool clones and Coco chore veg... I have 5 315 lecs and two less so far in my bloom..
I'm generally 1.5 to 2 feet above my canopy.. I'm running the sun system 315 lec on 220 and have had a great experience with them I have 5 and two LEDs in my flower room