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Grow QuestionsLeaves curl up and yellowing

Leaves curl up and yellowing

DEATRstarted grow question 10 months ago

Beginner question, as usual (first time growing anything in my life tbh). My 2 plants don't look too healthy, especially one of them. Leaves curl up and yellowing (or not, I am not sure). What am I missing? Thanks!

DEATR

DEATR

DEATR

DEATR

DEATR

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Leaves. Curl up

Leaves. Color - Yellow

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LSchnabelanswered grow question 10 months ago

You’re giving them too much light for their stage of life. That SF2000 should be anywhere from 18-24” away running roughly 50%. I don’t always trust the light manufacture settings and that is why I have an Apogee PAR meter to test my light output. You can achieve the same results with your phone downloading a PPFD App and testing it. Right now you want to be roughly 300-400 PPFD I hope this helps.

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Scrubbyjimbobanswered grow question 10 months ago

They're looking pretty good to me. Your light does appear REALLY close though. If you're using the SF2000 you list in your diary, they recommend a hanging height of 24 inches for seedlings @50-75% power. Could be causing some early heat stress but it's not real advanced yet.

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