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Leaves curl up and yellowing
DEATRstarted grow question 8 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!
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LSchnabelanswered grow question 8 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.
Scrubbyjimbobanswered grow question 8 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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