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Brown spots only on top canopy leaves
Chasboerstarted grow question 4 months ago
Hello, i have a problem with my upper bud leaves. Brown spots only on the highest parts of the plant.
Medium :coco coir mills
Nutrients :canna a-b ec 1.3
Cheeze autoflower Day 56.
I had some issue that my ph meter was off, i gave nutrients with ph 5.4 instead of 5.8 for 2weeks
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AsNoriuanswered grow question 4 months ago
yellow leaves wont become green, spots will stay. you made calcium unavailable with wrong ph, calcium helps plant to withstand heat and light stress, now it burns from too intense light.
i would add calmag to feeding asap for at least few feedings and would reduce or raise lights for a week.
oldskoolkoolanswered grow question 4 months ago
It looks like calcium or magnisium.Check leaf chart. Its almost certainly down to PH.Certain nutrients become more or less available at certain ranges bepending on how acidic or alkaline the food is.
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