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Got red stems its not the /strain or cold night..would not say genetics because starbud have the same.. they get (cal mag ) too 1ml on 1l .. maybe low ..
Hi @MR_Greeen! My bet is that you took a clone on a pre-flowering plant which was already asking for loads of P+K. Now the stems have become purple because of a temporary Phosphorous deficiency, but you shouldn't fix this since you want them to veg. Just let them grow, this won't impact your yield. Happy growing! 👊
MR_Greeen
