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Brown spots? Rust, kalium or burnt?

YellahJelle
YellahJellestarted grow question 10 months ago
What are these spots? Growing outdoors, about 5-6 weeks old, not using any nutritients but made a mix with 1:2 Coco and soil, and some guano for them. I also found some trips, ordered neem oil for that
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Leaves. Other
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MisterAeroponics
MisterAeroponicsanswered grow question 10 months ago
Looks like calcium to me. Id get some microbes and beneficial bacterias in soil to help uptake some nutes better. But for now like stated about hit with some calmag
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HakunaMatata
HakunaMatataanswered grow question 10 months ago
I had exactly this kind of spots and applied a little bit of calmag (1/4 of the recommended dosis) and it worked. Id wait for an expert opinion though :)
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