Indoor Yellowing tips and brown spots on newer/higher growth?

[seedstodreams]

Day 33 Chemdoggin x CDLC autoflower by Mephisto
50/50 coco/perlite mix
Canna A & B with CalMag
5.8 - 6.2 pH tap water
850ppm for last 2 weeks
4x4 tent, 4x QB96 v2 with canopy getting around 50-60k lux
Started feeding 5ml/gal CalMag with my A & B around 2-3 weeks ago, this problem just popped up over the last few days

Lower growth looks fine and it's not all over the plant. I'm thinking maybe too much light? The other chemdoggin x cdlc next to her that's a few inches shorter doesn't have this problem and their being fed from same reservoir

Sorry for the pics, the lights are so bright and make it seem more yellow than it is

 

[Blue61]

I hope this chart helps ya out.

 

[seedstodreams]

Not really but I appreciate it

 

[BII]

Looks rather good overall to me. I only see 1 or 2 leaves affected, and seemingly not the very newest ones. If that is all, if there is no new spread, I'd ignore it. And it you feel a need, you could even remove the few affected leaves (although I'd leave them, since they are mostly unaffected and still doing their job).

But I suggest wait for more and better advice. And you should probably tell us more, if only about your lighting which you cite as a suspect cause/problem, also feed regimen, air temperatures, etc.

 

[seedstodreams]

Looks rather good overall to me. I only see 1 or 2 leaves affected, and seemingly not the very newest ones. If that is all, if there is no new spread, I'd ignore it. And it you feel a need, you could even remove the few affected leaves (although I'd leave them, since they are mostly unaffected and still doing their job).

But I suggest wait for more and better advice. And you should probably tell us more, if only about your lighting which you cite as a suspect cause/problem, also feed regimen, air temperatures, etc.

It's the new growth coming in, I noticed it the other day and it is getting worse slowly.

Running in 4x4 with 4x QB96 v2, around 18 inches, 50-60k lux. 5gal pots
Temps between 70-85F
RH 40-50%
They're in autopots so I just add water to the reservoir when it gets low and check ppm/ph. 850 and 5.8-6.2

 

[BII]

I'm not familiar with your quantum boards, but with such lights calcium (and/or magnesium) deficiencies could be starting. Maybe tell us you cal-mag feeding schedule so far.

 

[seedstodreams]

I'm not familiar with your quantum boards, but with such lights calcium (and/or magnesium) deficiencies could be starting. Maybe tell us you cal-mag feeding schedule so far.

Just adding CalMag in with the A & B in my res, around 5ml per gal

 

[BII]

Just adding CalMag in with the A & B in my res, around 5ml per gal

OK, you've just added cal-mag. But how much and when did the plant get before the problem?

 

[seedstodreams]

OK, you've just added cal-mag. But how much and when did the plant get before the problem?

Sorry, I should have been more clear. I've been adding CalMag since the start. Same amount for last 2-3 weeks, 5ml per gal
Problem just started 2-3 days ago

 

[BII]

Ooop! I was just about to suggest you post this to the infirmary, but I now see that this is were this thread already is! If only staff are supposed to respond here (I vaguely recall that), I deeply apologize.