Coco for the first time

[PhatJay]

I was wandering bout these brown spots you have been getting,they look very similar to what I had which was wind burn down to the fan being to close ??

My plants are fine and healthy, they don't have brown spots and I don't have any pictures of the issue posted. I got brown spots once and I fixed it by adding calmag in the 1st 2 weeks of flower. It is a common issue when growing in coco.