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I'm at day 55 auto ultimate Dutch passion.

13ltr pots, all mix soil by bio bizz, nutes =

Bio bizz nutes

Grow,
Bloom,
Top max,
Cal/Mag

I've had a cal/mag deficiency for a week or two, it's got worse the last few days, even after feeding, last feed was 4 days ago, two litres of water 1.6ml cal/mag.

As you can see she has red stems, red spots on leaves, which are now yellowing, dark green/blue hues and dying off.

What else could be causing this?

Maybe I've not fed enough as I've only gave half the recommendation of feed, occasionally I've uppded the doses.
 

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