Yellow leaves, and brown spots, what's the deal?

It's been in flowering for 3 weeks I think now was doing great and now this, I've flushed before it happened and I just flushed it the other day and re nuted.
Any takers here?
Using proper lighting loads of 2700k CFLs.
Good soil doesnt have extended ferts, GH nutes to start with as Ive used on all my other plants, this is the only one doing this.
I have 5 grows in progress currently.

This plant is from Grow 2 which can be found here https://www.rollitup.org/members/phenom420-147060-albums-my-2nd-grow.html




Thanks guys.
+rep for good advise.

The two top pictures are nute burn, and your bottom one with the spots is a Manganese deficiency (not to be confused with magnesium) . Are you adding any micronutrients in your nute mix?
Whats your pH at?

Ph is 6.5-6.8 I used GH Flora Gro, Micro, Bloom thoughout, same with my others, also use a tablespoon molasses every time as well.
I flushed and I cant tell if its getting worse or not, Ive been ill kinda with a toothach really bad and havent been n there as much

Thanks man

BeefSupreme said:

The two top pictures are nute burn, and your bottom one with the spots is a Manganese deficiency (not to be confused with magnesium) . Are you adding any micronutrients in your nute mix?
Whats your pH at?

Click to expand...

couldnt have put it better myself...pretty much thats it

it actualy looks like phospherus/nitrogin def

yeah N def was my initial thought wand I added more Flora Micro to it which is 5-0-1
the nutes I have are in my photo album, I just got a bunch of news ones, the ones I was using when this all started was the GH nutes. Oh I did use 2 tables spoons molasses after the last flush. It shouldnt be burn unless the prob with the greener leaves happened after I added more N.
I also thought P a little but I hate this part I think a few look like my prob so thats Y I ask.