Adjustments to PH, Nutrients, and climate control seemed to have saved these 4, but we've lost the Durban Poison crop entirely. Qp and WW have weathered my mistakes better than the QGs but everyone is on the mend.
When growing in Coco, don't forget to charge the soil before planting, it's most likely how we got in this position. Second lesson is that a plant that is under fed will still be better off than one that is over fed.
If by next week these ladies aren't fully recovered we'll be hitting the restart button on the whole grow.