In my experience
"tacoing" is often a response to a transpiration problem. I would check to make sure there isn't too much fan pointed directly at the plants in question or an excessive vapor pressure deficit caused by the exhaust fan. If air flow sucks moisture away from the plant faster than the plant can handle, an early response is to "taco" to slow transpiration (loss of water). One reason "tacoing"and an apparent calcium deficiency could go together is that both can be caused or made worse by a weak or compromised root system, in my experience.
Hello, Bmac1
"tacoing" is often a response to a transpiration problem. I would check to make sure there isn't too much fan pointed directly at the plants in question or an excessive vapor pressure deficit caused by the exhaust fan. If air flow sucks moisture away from the plant faster than the plant can handle, an early response is to "taco" to slow transpiration (loss of water). One reason "tacoing"and an apparent calcium deficiency could go together is that both can be caused or made worse by a weak or compromised root system, in my experience.
Hello, Bmac1
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