Week 2 in flower day 41 total, everything else looks great but a couple of leaves at the bottom. Gave her first feeding using blue planet 5 days ago and runoff was 1360, using fox farm ocean forrest. My oscillating fan is real close to it so I was thinking it might be windburn but I don't know. Ph is around 6.5 before and around 5.5 in runoff
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Lower leaves only right? If so, IMO looks like symptoms of phosphorus deficiency. Runoff pH is a bit low for in soil. More info: https://www.mrgrowit.com/post/phosphorus-deficiency-in-cannabis-plants