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Wondering if the spots on 8 & 14 could be N deficiency?
My thinking is that it could be that the N in the GH nutes is derived from an organic source, and that my previous addition of H2O2 could have depleted the N causing a deficiency.
I've attached an image I found of a plant showing N deficiency in the Veg stage. Seems to me many of the leaves on this plant look a bit like mine.
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