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I’ve got a mother plant and three blueberry muffins in different tents right now exhibiting the same problem. They’re being run under LEDs the VPD is good and they’re being grown in homemade super soil with supplemental feed never over 600 ppm.

over the last week or so I’ve noticed lower leaves on both the mother and separate flowering plants starting to dry out and crack after turning rust colored. This is happening to some of the lower flowers as well and killing any terpene or cannabinoid production.

Any thoughts?