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Marking on leaves
UpInSmoke420started grow question 4 years ago
I can see these markings on my leaves, can anyone tell me what it's from? Or lack of? Thanks!
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Leaves. Other
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Fungal79answered grow question 4 years ago
Looks like calcium deficiency. Spots, and twisty points of leaves.
Also some stress on leaf stems.
Are you using hard water?
I used to get similar, from using phosphoric acid, ph down, which reacted with calcium in water, and the extra cal/mag used to treat the apparent deficiency. This creates calcium phosphate, which isnt very soluable. Look for white crust, at the soil line, on your pots.
I'd first look at ph at the rootzone.
Lockout looks quite similar, as calcium is one of the first to show.
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