m0useanswered grow question 3 years ago The weeks leading up to this question have been visually great in your diary.
Makes me think something has happened in the last week or two regarding feeding and switch to flower.
In your Diary you say you have been giving them nutrients here and there.
How much and what kind?
ml/l - liquid/crystal vs dry amendment
Did the formula change at all drastically in the last week or two? 50/50 bloom/grow to 20/80 or something?
Are you monitoring the EC of your feeding solution if its applicable?
If its to strong in concentration it can cause some serious issues. Lockouts, overfeeds, salt buildup root burn...
I can't say for certain whats the problem here, but if I has to guess I think you are having an issue with feeding, and they got way too much or too little.
everything your seeing now is the fallout from that. This is why listing your nutrients on the grow is useful and its EC.
Purpleing can also be caused by a few other things that's not the main point that should be focused on though.
Might be easier to message using your DM's
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Good Luck!