Is this septoria or a deficiency?

Posted Apr 26, 2022, 8:07 PM UTC
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Posted Apr 26, 2022, 8:07 PM UTC
First time growing. This is a kush photo I intend to move outdoors when it warms up more. It is grown in hp promix, with a bit of worm castings and gaia green all purpose.
OK so the promix is neutral has no nutrients in there, worm castings are good for nitrogen and the gaia green all purpose is a bit meh for weed. I would say they have been underfed but the gaia green stuff is made from a ton of sources high in calcium, bone meal, fish meal, id be real careful using it.
https://www.growweedeasy.com/cannabis-plant-problems/phosphorus-deficiency is the blotchyness, most likely. I dont like the look of that lower leaf, that could be calcium related. Id say they are craving PK but its a bit soon