What did this?

MadMonk
MadMonkstarted grow question 6y ago
What caused this? And how can I prevent it? 21 days old spends most days in greenhouse and nights under a 250 hps. Thank you in advance.
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Week 3
Leaves. Curl up
Leaves. Color · Pale
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labifle
labifleanswered grow question 6y ago
Hey gardener! Actually, I think she got a heat shock, like when you're growing with an HPS in the summer and it's too hot and too dry, so not humid enough. Good luck!
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MadMonk
MadMonkanswered grow question 6y ago
Yes sorry, she had had nutrients including cal mag.
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MadeInGermany
MadeInGermanyanswered grow question 6y ago
Hey do you add cal / mag? if not I would try it :-)
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