Let me just say that after seeing your pics, I have a fairly high level of confidence that the wood content is problematic. You can test this theory, by pulling up one of those plants, and sticking it in a container with a proven mix, and see if it bounces back. And along with wood, I'd suggest that you may have a problem with over-drainage and compaction (although I'd be less confident throwing that out without feeling the soil)
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Whatever the problem is, it's systemic. Full on yellowing isn't a single thing. If I had seen it early, maybe it would have been easier to pinpoint. But those charts you see online, and posted in the forum, are almost completely worthless, for most dignoses. The problem is, nutrients have knock-on effects. If you cut out nitrogen or calcium, for examle, other nutrient uptake is also interrupted. And most growers don't experience single nutrient deficiencies. So, at best, knowing what a single nutrient deficiency looks like might give you an idea of what failed first, but it should ALMOST NEVER be used to reactively adjust a feeding regimen. Sometimes, deficiencies are not deficiencies at all.
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Keep us posted what the soil test comes back with. Don't take the result as a final word. It's probably going to just be a starting point.
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Whatever the problem is, it's systemic. Full on yellowing isn't a single thing. If I had seen it early, maybe it would have been easier to pinpoint. But those charts you see online, and posted in the forum, are almost completely worthless, for most dignoses. The problem is, nutrients have knock-on effects. If you cut out nitrogen or calcium, for examle, other nutrient uptake is also interrupted. And most growers don't experience single nutrient deficiencies. So, at best, knowing what a single nutrient deficiency looks like might give you an idea of what failed first, but it should ALMOST NEVER be used to reactively adjust a feeding regimen. Sometimes, deficiencies are not deficiencies at all.
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Keep us posted what the soil test comes back with. Don't take the result as a final word. It's probably going to just be a starting point.