Diagnosis... what are these plants telling me?

Grow from Home Plant Problems
1

New topic and need for assistance…
I have Two plants im noticing issues with… One in Veg, and One in Flower

Starting with Veg, one of my Blue Kush plants has a leaf that lookes like it has rust spots… its only on one leaf tho… not multiple… the plant seems to still be growing strong… any know what may be the issue or any recommendations??

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Second, i have an Afghan in flower (going on week 2)
And a few of the leaves are turning yellow. My other older plants in flower are not showing symptoms of anything… any advice would help!!! Thanks GN and everyone thats dropping that knowledge

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Medium: Coco/cley pebbles
Fox farms bottle nutrients: Veg- Grow big, big bloom, cal-mag (ppm between 450 - 650)
Flower- Big Bloom, Tiger Bloom, cal-mag (ppm between 700-1100)
Every other day watering/feeding schedule

2

I think you’ve got a magnesium deficiency going on with your plant in Veg. You can tell because of the yellowing of the leaves between its veins, and the rust colored spots. The rust colored spots are signs of cal-mag issues. I think you need to up you base during feedings.

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