Slightly concerned...

Hiya
Heres my HSO Blue Dream Auto dwc 135w QB temps/RH all stable more or less.
Some of the small fan leaves have started turning purple, obviously ive seen this many times on other strains but first time ive had it. Also theres noticable yellowing of some of the leaves, i dont know if this is normal.
Shes getting Canna flora A+B at about 1000ppm, that rises as she drinks so im reluctant to raise that. Im thinking maybe she could do with a shot of PK13/14...?
Any thoughts?
Cheers!

I would be worried too. They look like they are maxed out on nutes and approaching lock out. I gave my current crop some PK booster this time around and fucked them up big time. I wouldn't recommend it, might be too late anyway for yours. I grew some HSO Blue Dream a few years ago. The buds were beautiful and had good bag appeal. The buzz was too weak for my crew that is used to Sour Diesel. I think I would cut the nutes in half and ride it out.