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Followed instructions on storing/calibrating my PH pen. Had issues with a seedling looking sick with twisted leaves and spots. Went to the hydro store and picked up some ph drops. Didn't think my ph pen was the issue. Well lo and freaking behold. I'll try re calibrating as well as work in...
Calcium deficiency? https://imgur.com/gallery/JrtyaSz
74f, 60 rh, lights 30 inches above. ffhf soil, no nutes ph 6.5. Added calmag to the last watering. Cut the leaves off, was concerned it would get worse. New growth doesn't have these spots. Please and thank you.
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