Dont know..

Gejlordstarted grow question 2h ago

Hi, I have this problem again. It happened two days after I watered it with Calmag. No fertilizers. I fertilize every other watering. These spots appeared everywhere. I grow in Biobizz soil and use Biobizz fertilizers. The last watering had a pH of 6.5.

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ohcibianswered grow question 1h ago

I had similar spots and in my case it was caused by burn after I watered my plants over the leaves. So it was a sun burn from water droplets. The damage of such can show more than a week after it was caused, which makes it harder to pinpoint. Of course do the usual checks like checking the underside of leaves for pests and observe if it spreads (if it was caused by water droplets, it can look like spread because of the delayed appearance so don’t confuse those)

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