Discoloring leaves

Grow Cycle Flowering
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Got 3 plants at about 80 days. Week 5 flower. Tent grow, temps at alrox 75-80f day, 70 night. LED grow.

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About this time every grow my leaves start to turn. Nutrients are fox farm trio. Give em cal mag. Ph water to around 5.9 to 6.5 when i water. Any thoughts.

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Kinda looks like manganese deficiency to me. But I’m no pro, others would know better. The link below is the best reference I’ve seen.

Cannabis Symptoms

Some of it looks like a pest, but like I say, I’m no pro.

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Do you have the spots on the other plants or just the one?

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You may also have a calcium deficiency but the spots are screaming bugs and if so that would be my primary concern.
Grab your jewelers loop and one of those spotted leaves and remove it from plant place it on a table upside down and take a look for insects and eggs. :egg:

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Thx, will be checking asap

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Have you been flushing per fox farms nute schedule to remove salt build up

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Are you checking ppms on your runoff

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Flushed all 3 girls yesterday afternoon. Checked leaves, no bugs. I have the gauge, just dont get the runoff ppms thing, its a strugle lol.

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5.9 is a tad low as base ph for soil. If coco or dwc that is about right. Use 6.2-6.8 as your targets is my suggestion. 6.5 a nice solid number for soil allowing all nutrients to be absorbed. Just my thoughts. Also pretty thick. A little fungus can develop in thick plants. Easily handled with organic fungicides.