They can also get edema under cxb 3590s which many weed growers consider being the best LED cobs, I know from experience. It seemed to be worse on the hybrids than heirlooms in my experience. The cxb 3590s work very well for lettuce though not for tomatoes. I’d suggest you move them under some T-5s , they will recover if not too far gone. Hope you can rescue them soon!!
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