Diagnosis Needed on First Grow:New Leaves Getting More Pale, Arms/Stems Purpling etc.

HPS 250 WATT.
Organic Miracle Grow Soils.

This plant has been vegging since beginning of June.
Started as an outdoor plant getting limited hours of sunlight and dark... then for about 2-3 weeks they had very poor lighting after i moved. Then the lamp came in about 3 weeks ago and it shot from about 3 inch plant, tiny, with few leaves to about 10 inches in a week, then stopped growing since..(4 weeks ago)

4 weeks or so my leaves started to get slight discolorations and eventually (now) the whole plant is a new pale shade of green.
New shoots keep sprouting and growing but they seem to get more and more pale..
Only the tiniest leaves and lowest level have burn tips but there is 1 or 2 big leaves in middle with like 1 or 2 burnt looking spots...
The lower half of main stem is pretty green, but all leaf ARMS and top half of Main stem is deep purple/reddish.
Temps typically run around 80-85 and Humidity typically around 30-45.

What do you think i need to look into further or change or try?

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