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Rust spot on leaves
fadagrowstarted grow question 2 years ago
A week ago I noticed some orange rust spots just before starting a flushing … but even after flushing I still more and more rust spots, I guess it s a calcium issue but shall I just get some calcium solution or I could be something else ?
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Leaves. Other
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AcidFarmeranswered grow question 2 years ago
hello friend, if you have done a wash, first of all let it dry well before wetting it again, then proceed with the correct doses indicated by the fert manufacturer (staying slightly less or even half the dose).
Burns/deficiencies will not disappear from old damaged leaves. but that doesn't affect it.
Zurban_Poisonanswered grow question 2 years ago
This is due to the low ph. the leaves appear at the beginning of a drop in color, yellow spots that eventually turn into a burn such as in your photo. such an effect also gives a sharp drop in PH from high to low or vice versa.
in your case, it's the low ph that caused the feed blockage. if you have already washed the plant, then it is important to dry the soil to 40-30% and then give basic fertilizers + kalcium and magnesium and be sure to set the ph level to 5.8-6.2
damaged leaves will not heal but new symptoms will not appear ..
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Chow_13answered grow question 2 years ago
Guessing to much food and its just taking a while to show results. or your light is to close. Try raising it up by 5cm to 50cm and see how they react. I don't think it looks like calcium at all.
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amadeoanswered grow question 2 years ago
Yes it is possible. Your plant is in the early flowering stage, so it also needs more phosphorus. I would also check if the lamp distance is right - not too close.
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