If the plant is growing taller, the light distance may no longer be appropriate. I'll get spots like that within 8 hours of the light becoming too strong for the plant. Are the leaves on top also curling shut?Yes calibrated, I have two meters.
I feed x2 (10 ml per gallon) Cal-Mag Plus as is because of RO water?
My current list:
Theoretically I have ruled-out three of the four. Unless heat stress can happen and not show this for two-three weeks. But this does not explain issue on lower, tucked-in leaves...
- ph flux.
- Calcium or magnesium or phosphorus deficiency. (some purple on leaf stems).
- Heat stress.
- Blowing smoke on them. (first time I have done this and did it a few times 3-4 days ago.
I would have blamed FoxFarm if this happened sooner. I have been meaning to post, I think I finally got a bogus batch of Fox Farm Ocean Forest (the ones I have read about, large pieces of wood, rocks and plenty extra perlite). Problem with this is the bad batch was not this round, and I they are over thirty days old.
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