What is this, can anyone help me?

What could this be? Originally I thought it was Nute burn and flushed it. Now it’s like this with the growth turning purple and the upper leaves having light green coloration. Could it be light stress? Root bound? Nute deficiency?

It just looks like being over watered is taking its toll. Droopy, leaves have progressing yellow patches. Let it dry out before giving more water/feed.
What are you feeding? How much of the recommended feed are you actually giving?
Temps? Humidity? What light is being used, and at what power level/hanging distance?