Brown spots on leaves during flower stage

Has any body ever had brown spots on some leaves

Pics or it didn’t happen.

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Pics would be helpful, but that’s usually a result of incorrect PH or mag deficiency.

I’m looking for help
Here are my pics

You can check my thread first timer inside for my garden specs…

Looks like a calcium deficiency to me. Caused from lockout or bad ph is the question. Do you use cal mag?We need more info.