Is this mildew or some kind of fungus?

Boogierook

Well-Known Member
I have this plant with some odd spots on it. I guess it’s possible that i over watered, and maybe it got locked out, but I don’t think it’s likely.
they r in FFOF with 40% additional perlite and a bit of extra Dolomite lime. Watered when soil is dry every 3ish days.
Have not fed anything just PH’d water.
temps average 75F about 55% humidity. With a 8 inch oscillating fan. At night temps do not get lower than 69F
Haven’t seen any pests but anything is possible I guess. I’m thinking it’s maybe fungus? Perhaps I brought some spores inside one day. 4 other plants growing in the same tent with no symptoms.
Any help is appreciated!!
 

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Thinking it is some type of downy mildew but not sure. Probably will end up culling the plant to be safe.
 
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