She's looking frosty. Some how the pics got added in backwards, sorry.
This is a pineapple express auto,
at day 34/36 of flower. Planted in Fox farm Happy frog. feeding, Recharge, Incredible Bulk (nPK) and recently Cal mag. H20 pH 6.7
About two weeks ago the spots started appearing in lower leaves and now working their way up. Had never given it any Cal mag until a week or so ago. Only been given twice. I'm at a loss with this strain cause thought I had it figured out and if it was a cal mag deficiency, it shouldn't be continuing with spots on other leaves. But apparently not as smart as I thought I was. Still a novice on indoor growing. And you guys are usually spot on with helping anyone. This has been a great site since day one of finding it. Been absent for a while. Such as life, ya know...
Not answering because you've been gone for so long 😉 lol... How you doing mate, good to hear from you 😉
Typical signs of excess potassium mate. Those rust spot with the yellowing leaves. But it could also be a mag def. I would say potassium excess is more liekly....... what are you feeding her, like what food and how many ml per litre, and how often? 
"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain
@macky well recently just two feedings a week apart with the Incredible Bulk organic bloom boost 0.1- 10 - 25.. 1/4 Tbsp per gallon. And before that the only thing I have fed it was Dr. Earth organic bloom feed 1-2-1 a Tbsp per gallon. And as mentioned just twice recently between 3-5 mil of Cal mag. Though the spots appeared before using the new higher PK feed. That is why I didn't think it was a potassium excess. But like I said it's had me pretty stumped. All my other babies been looking green and healthy and doing good. I had to get away from the salt-based nutes and go all organic. All that heavy flushing is way too much work on my old broken body lol.. and don't have a way to know what my EC is... I only have a good pH pen. Just been trying to stay easy and positive with the world falling into chaos, more than I've seen in my life time..
yer you cans ee a bit of the other plants next to it and they look very healthy. Not much wrong with that one either tbf though mate, its not a major problem. I think now you have started using a pk booster it may have been too much and thats whats caused the problem.
But seeing as it is only one plant, do you have a fan blowing more at that plant than the others? maybe its but the intake vent? This can make a plant eat/ drink more and cause Ec spikes in the medium. It could be down to the way she is being watered. If she is drinking at a different rate to the others, she might be being over/ under watered. Does that sound like it could be an issue at all mate?
"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great.”
― Mark Twain
@macky I have a large tall oscillating fan that blows throughout the 4 by 8 tent on that end and a short fan at the opposite end, though I never have to close those doors completely. In the stage it's been in, she's been drinking about a half a gallon of water every two days, that's letting it almost dry out but not enough to wilt leaves. She's definitely drinking a little more. Though my critical purple is a bigger structured plant it's not as far into flower, bigger container and drinking about the same. Been feeding them the same, as I was some recently harvested Gorilla, Cindy and Banner. All did great, but this Pine Ex acting up. LOL. I think getting used to what a lot of strains differ and what they require maybe the biggest challenge. Most have been fairly similar, except my first critical purple and this Pine Ex. Maybe I shouldn't give it anything other than pH H20 for a week and see how she does. I just hate to see more leaves showing bad signs, when I should be able to fix it. But I am terribly bad at wanting to be perfection in some things.
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