Is the a micronute deficiency or burn?

  • Thread starter Mainebuds69
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Mainebuds69

Mainebuds69

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20220731_224319.jpg
20220731_224319.jpg

So it doesn't wipe off like rust mold ..3rd week of flowering with autos...Joe's organics blend 3 gal pots ph is around 6.8...spots are like grains of sand and a bit bigger . Lower leafs more affected..Any thoughts?
 
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