Nutrient Burn or Defeciency?

Here is the problems I'm having. The plant was doing fine at first, except the top leaves were yellowing and drooping. I thought this was because of the lamps causing them to burn since the bottom new growth was getting very bushy and a nice green as in the pics.

I raised the lamps, but now I noticed the bottom leaves are starting to get yellow at the tips. Any advice or help would be great.

Here is my information:

It's Indoor, I've been keeping it in Veg now for about 3-4 months on a 24 hr light cycle to get it big for enough clones. and until I can get more lights and the room rewired.

I was growing in a mix of 2 parts Shultz Peat Moss, 1 part Perlite and 1 part Shultz Potting Soil, but replanted it in Pro Mix potting soil yesterday.

2 HPS 150w lights about a foot from the top of the plant

For nutrients, I have Plant Prod 20-20-20, 10-52-10, 15-30-15, and Miracle Grow 24-8-16 with micro nutes

I water every 2 days with about 250-300ml mixture of the 24-8-16 mixed at 1/2 strength.

looks like you have multiple issues going on casuing nute lockout. I can see Nitrogen and Mg defeciency. Also looks slightly overwater- I would change to every 3 days for awhile. I would flush, flush, flush and restart the nutes at 25% and work back to 75%. Also looks like the lockout causing PH problems. Have you checked your PH? Raise those lights a little more until she resumes to normal.