The plants are still alive and I have learned another lesson.
Lesson: Don't boost the plants too close to the light, they don't like it. Unless, they are seedlings.
I boosted the plants closer to the light in the tent, checking to make PAR was 300 or less in an effort to turn down the power a little. I went through all the maybe it's this, maybe it's that, until deciding to put them on the floor and boosting the light 'til PAR was correct. That was it.
Plants under the florescent grow light suffered the same and I corrected that and they look much better now. It's puzzling to me how the seedlings can be right up against the tubes and not show stress, but the month old ones suffered. Fascinating.
Tent plants before and after.
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Florescent grow light plants.
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