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Deficiency?
DeadwebsiteBoringcommunityanswered grow question 4 years ago
P is used for transportation and Energy... So you have High Transportation rates at the top/upper canopy.. The lower parts look less effected also smaller leaves, Larger leaves=higher rates of transportation.. A General rule when problem solving feeding/balance issues.. Is if it's lower on the canopy it's a deficiency and if it's upper it's from too much... This is only a kind of sort rule.. It doesn't always apply to every situation.
DeadwebsiteBoringcommunityanswered grow question 4 years ago
Your p.... is way too high for vegetative growth... Your plant can't do anything with all the excess P you are feeding.. Put down the Cal Mag bottle.
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The8thChevronanswered grow question 4 years ago
Looks like a pH issue. If it started at the top of the plant, perhaps add some CalMag.
Just remember that once its stops spreading, you're good. These spots will never be green again and that's not a big deal.
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