Tan spots on fan leaves. Leaf Septoria, phosphorus, or ph fluctuations??

  • Thread starter mkweed
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mkweed

mkweed

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Hello, Trying to figure out what these yellow spots are on my fan leaves. They are whitish/tan and all over the fan leaves. My leaves are also dark green and slightly drooping.
Tan spots on fan leaves leaf septoria phosphorus or ph fluctuations
Tan spots on fan leaves leaf septoria phosphorus or ph fluctuations 2

I don't see any insects or critters running around on them.
Leaf Septoria - Anyway I could verify this might be a fungal infection or something of the sort?
Phosphorus - I use Advanced Nutrients Micro and Grow. Plus Pysco Zyme (live culture). It might need grow nutrients
pH fluctuations - My pH is typically is around 5.8 or it at least always gets around to that after a few days.
These three the closest I could find in symptoms.
Would love to hear back from anyone!
Thanks!

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