Do you use tap water? I've noticed that tap water ph seems to take sudden ph shifts during the winter, reason unknown, but I check things like that. It looks to me like you had a ph issue briefly as most of the spots and yellowing are low on the plant and a bit at the top, classic deficit caused by ph IMO.
I have to say, I have toyed with the notion of throwing in the towel for this grow so as I can buy the two of three things I need to amend my soil so now yellow will occur as easily. they got patched and splotched early on from this COB light well under full power too. still hasnt come back from it. so thats not cool at all. I MISS using T5's. far superior looking plants ime actually. but we'll see. If I continue to have issues,ill just push it back a few weeks till harvest and then I can do a more proper trial with this light.i KNOW it'll produce I just am a bit of a perfectionist in that I really cant stand eye sores cuz quite honestly Im not used to them..AT ALL! I hate em. LOL! Im not used to it at ALL with good ole T5's. LOL! but again,we'll see. and Thanks. ALSO< I stuck the new knob on too. LOOKS awesome! Thank you broseph.I really appreciate ya sending me the knob n plate looks special now
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