Drooping plant with white stuff on some leaves

Plant has been drooping for about 3 days. Water level and ph are good. No change in feeding. I was using LED and not getting heat in the tent. I figured droop was cold. Growing in coco coir with RO water and feeding according to the Flora Flex chart. Oddly this started happening and I’m not sure what’s up. Tent has fungus gnats but my little young plants are fine so I don’t think they are the issue. Droop started under LED but after adding HPS i don’t see ay difference. I took some details of the leaves. This is the only plant i see this on currently. If i go back to LED i’ll lose the heat but I’ll gain humidity. I lack a light intensity tool but the droop was the same under LED. About 1

week earlier i had great vigor.

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Foliar spray?

Nothing Foliar. I’m thinking powdery mildew maybe. Leaves feel more dry too. Less cool to the touch.

I did mix in some Mykos into some of the pots recently. I wonder if the Mykos was carrying some mildew spores.

@JoeCrowe is that pm?

Im not sure. Sulfur spray 2x in veg is a must. So your ok there. Soil grower and plants look like that here when overwatered. Droopy.

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Definitely not mildew there. I was suspecting some perlite bits or some water scale. I’ve seen leaves droop like that in a couple of scenarios. Root bound, lack of nutrients, and over watering. Just use that as a checklist. When were they last transplanted? Last time they got nutrients, and what does the medium feel like.

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Do you have a humidifier that you have tap water in? That can leave a residue on things, not sure if that’s what it looks like, but that’s what came to mind.

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I think it could be this … icon_e_confused|nullxnull

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I use RO in the humidifier.

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I believe this is it.

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I pulled the leaf, brought humidity and heat down and have not seen the issue again thus far. Might of got it early enough

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