2 weeks of flowering left and my girls in trouble...please help!

Hi all,
I am attaching a photo of the problem I'm seeing on my girls fans because I can't tell if she has nutrient burn/lockout or what? Sorry, I know I shouldn't have taken pics under the HPS, but she's too wobbly to safely move to natural light.
I got the plant from a buddy that used Miracle Grow Moisture Control potting soil on her, and she had a serious Magnesium/calcium deficiency when I got her. I fixed the deficiencies (he was using straight distilled water on her), but now this and I only have 2 weeks left before she is ready.
When I got the plant, I didn't ask what soil was in it, I just offered to help save her, until I saw the little round balls in the soil and asked him WTF it was. Wish I would have known that from jump, because I may have never offered to become the nursery for a plant with so many problems.
She also came with fungus gnats (Thanks MG!), which I have been controlling with pest strips & sand, but I have that problem under control now as well. The soil pH and runoff is right where it should be, so I know it's not that either.
I also tried foliar feeding diluted Epsom salts on one of the lower fans that was was clear from bud sites thinking maybe the Mag deficiency was not completely resolved, but it did nothing.
Up until she started spotting like this, I was giving her my normal nut. regiment of FF Tiger Bloom, GH KoolBloom, Sweet Berry & Cal-Mag. But I'm wondering if I should do a Clearex flush now? Is it too late for that with only 2 weeks left? I would be doing the Clearex next week anyway, but if there's any chance of clearing this up & giving her another week or two to fill out more I'm all for it.
The buds are still getting denser, but the main cola looks to be struggling and definitely does not have the trichomes that the lower buds do.
Any and all help is greatly appreciated.

Heat issue. Could be attributed to nute burn that helps speed up heat damage. Leaves should be soft, but firm. Not dry and hard. Either get more air moving over your plant, more air moving out of the room, raise the light, something - but get your temps down.

Also water her more, if over watered the tips drop, if under they turn up towards the light. So again, heat is your issue, and if you cant get heat down you have to water more.

Thanks for the reply.
The light is over 2 feet above it and the others in the room are not showing any signs of any problems. I also have fresh air flowing 24/7 (well, cut it off for few minutes to take the pics, but other than that 24/7). Been watering every 3-4 days, fert. every other watering as I do with others and I can't get it to recover.

Here look your fine dude. I had a heat issue 2 weeks ago and look at my leaves. They come back just don't remove them. This is a pic of my plant i took and its about a week or so from harvest. Look at the leaves on there, you can see the heat damage but the cola is still bigger than a 2 liter.

Also, if you have that many fungus gnats i bet you have some root disease and that is where your deficiency problems are coming from. I know its a little late but your best bet is to apply a flush then directly apply a nice tea or slurry of beneficial bacteria and water it again. This will help you out the most.

Situation420 said:

Also, if you have that many fungus gnats i bet you have some root disease and that is where your deficiency problems are coming from. I know its a little late but your best bet is to apply a flush then directly apply a nice tea or slurry of beneficial bacteria and water it again. This will help you out the most.

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That's what I was wondering. Didn't have the gnats till I brought in the foreign plant with MG, but I only see one or two every now and again. Covered the soil with sand and worked like a charm. My others are in FF soil and look much better than this scraggly looking thing with no signs of any problems.