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Could these DARK Brow Spots be Leaf Septoria?

Ice_Rstarted grow question 5y ago

since two days dark brown spots have appeared on one of my plants (4 in total). it started with one leaf and is now on 5/10 leaves on that one plant. i am wondering if it could be Leaf Septoria as some of the symptoms seem to match but so does phottasium defficiency

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Leaves. Color - Dark-brown

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Ice_Ranswered grow question 5y ago

Anybody any idea?

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Ice_Ranswered grow question 5y ago

Last watering of this plant 25-11-2020 Feeding water: ph 5.8 ppm 435 runofff water:ph 6.25 ppm 695

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