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Laysthepipe said:
It happens.

If it isn't happening on other plants you are probably feeding correctly.

I would go with pheno.

This doesn't mean anything else will turn out purple either, I found this to be almost common.

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lampshadehelmet said:
Really very little affect on plants in my experience...
If that is the only sign you see of deficiency then leave it be, but if there are others, then up your nutes. Don't mess around with treating specific nute deficiencies, most nutrient programs are very sufficient and the problem most likely lies elsewhere...(ph, salt build ups, root bound, etc... so on and so forth)

Always under treat, rather than over treat, as a burned plant is stunted horribly.

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  It's all organic, brah.

EDIT: The growth is healthy overall, but it just concerned m3.

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Laysthepipe said:
Organic can still burn

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