Mangel oder andere Grund ?

XtoVall
XtoVallstarted grow question 2y ago
My ladies are in BT 12. (220Watt) They look great so far. There were some in front of the tent of the same strain that don't have these yellow edges. Could it be too much light? Or is it a deficiency? Maybe someone can help me out. Thank you in advance 🙂
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Leaves. Curl down
Leaves. Color · Yellow
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stoney2k
stoney2kanswered grow question 2y ago
As for the edges, potassium deficiency could be one possibility.
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Andre83
Andre83answered grow question 2y ago
You have the LED issue, it's not bad, you can take Cal and Mag. Many strains have this from the LEDs, check out Athena Cal-Mag extra for stuff like this.
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00110001001001111O
00110001001001111Oanswered grow question 2y ago
because it is starting at the serated tips and margins, i'd lean K-deficiency. mg would have rust spots earlier than k-deficiency and starts with interveinal chlorosis, not around edges. you should see some rust-colored damageat the tips soon enough as that is also a k-def symptom but again different location than Mg, at least initially. you let anything progress and it's all over the fucking place :P
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All_our_small_plants
All_our_small_plantsanswered grow question 2y ago
I also think it could be a CalMag deficiency, it happened to me before too, since then I add a dose of CalMag from BioBizz when watering to prevent this, just as a precaution. It's not very expensive and it has definitely helped me. Even if you have a fertilizer that contains calcium and magnesium, add some extra.
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Organoman
Organomananswered grow question 2y ago
Nothing to do with light, but definitely a magnesium deficiency.
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AsNoriu
AsNoriuanswered grow question 2y ago
Reminds most lack of potassium. Could be aftermath of small overfeeding and magnesium lack, but i think its potash....
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