Fan leaves suddenly wilting

Plants are 3 weeks old. 2 days ago they looked perfectly healthy, I noticed last night some spots staring to form on lower fan leaves, today when I opened the tent they looked like they do in the images below. I see some yellow and white spots on some leaves that look like either mold or eggs of some sort. Though I couldn't find any pests actually on the plants. The wilted leaves are very crispy and crumbled if pressed. Couldn't find anything quite like this online, anyone familiar with what's going on here?

Have you checked thoroughly under the leaves?

Those are dried leaves or parts of them, maybe you forgot to water? You might have pests but it could also be just some debris. Week 3 and you flower, thats the biggest issue IMo…

hotrodharley said:

Have you checked thoroughly under the leaves?

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It was too difficult to get pictures under the leaves but yes I checked thoroughly and all I could find were little clusters of white that look like these

When you can see the white clusters through the jewlers loupe they almost look like milky trichomes.

Bukvičák said:

but

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I've been watering every three days, and they're autos that's why they're starting to flower.

Does this dusty looking stuff wipe off easily? Read about downy mildew.

hotrodharley said:

Does this dusty looking stuff wipe off easily? Read about downy mildew.

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The little white flakes do, and I'm fairly certain those are just perlite as I added extra to my medium, but the little white orb looking things are different and they don't wipe off

hotrodharley said:

Does this dusty looking stuff wipe off easily? Read about downy mildew.

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I had considered that it might be downy or powdery mildew but the thing that confuses me is that none of the white clusters look fuzzy. They all look like clusters of little white orbs.

WavySenpai said:

I had considered that it might be downy or powdery mildew but the thing that confuses me is that none of the white clusters look fuzzy. They all look like clusters of little white orbs.

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Downy is under the leaves with the damage appearing topside.

The white orbs are totally normal,AFAIK nothing to do with your issue,people often think their spider mite eggs.

myke said:

The white orbs are totally normal,AFAIK nothing to do with your issue,people often think their spider mite eggs.

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Thanks, thats good to hear! At this point I'm thinking it may be a mobile nutrient deficiency like magnesium considering its starting on the lowest leaves, and seems to be moving up. I just watered with a bit of calmag.

myke said:

The white orbs are totally normal,AFAIK nothing to do with your issue,people often think their spider mite eggs.

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I noticed those balls years ago and it freaked me out. Came to the conclusion that the tiny hairs on the leaves where secreting. Not sure if that's correct but that's what it looked like to me years ago when I first noticed them.
I took leaves to the hydro store and had him take a look as well and that's what he thought as well