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Yellow & brown spots in 2nd and 3rd week in coco-perlite nursery cup. What am I doing wrong? Fed until 20% runoff (extra), strained. Smth with roots?

tangie
tangiestarted grow question 3 hours ago
2nd grow in 70/30 coco-perlite mix* & very similar issues w. yellow/brown spots in weeks 2-3, then stabilizes. *CalMag & pH buffered 6h @ 0.5mS, pH5.8, strained** & seed planted. Feed: W1: **Strained sol. + water 70/30, pH5.8 W2: AN M+G+B 1-1-1 + Simplex CalMag Plus 0.4mS Help
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Week 2
Leaves. Edges burnt
Leaves. Color - Dark-brown
Leaves. Color - Black or grey
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m0use
m0useanswered grow question 14 minutes ago
they look good. I don't see what your describing. You also got a seed with 3 cotyledons. They sometimes are weird plants. https://www.reddit.com/r/microgrowery/comments/31ihez/this_odd_seedling_has_3_cotyledons_and_3_true/ I think maybe the feed might be a bit to strong as in the 2nd pic its a very lush green, almost to much. but if it growing well and healthy I would just leave it.
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GrowerOG
GrowerOGanswered grow question an hour ago
hello mate, if you talking about the very little spot brown on the rigth leaf i think it's nothing to worry about. Probably water drop has fallen and you didn't see.
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Newt_Loop
Newt_Loopanswered grow question 3 hours ago
Those little spots on that 1 leaf could be from a couple drops of water when watering, humidifier mist, or even debris that could of came in contact from opening tent, fans, etc I see no other symptoms and your plant looks really great! Keep doing what you're doing!!!
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Seedler
Seedleranswered grow question 3 hours ago
Yeah don't worry, that just happens if fertilizer hits the leaves from watering. it won't go away but it also won't get worse. Second picture looks very healthy, ready to be transplanted in final pot (: good luck!
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Ninjabuds
Ninjabudsanswered grow question 3 hours ago
Hey there it looks like your dropped a small drop of water on the leaves that had fertilizer in it. Or it's very mild burn from barley over doing the
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