Could these DARK Brow Spots be Leaf Septoria?

Ice_R
Ice_Rstarted grow question 6y 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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Week 6
Leaves. Color - Dark-brown
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Ice_R
Ice_Ranswered grow question 6y ago
Anybody any idea?
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Ice_R
Ice_Ranswered grow question 6y 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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