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Cal mag deficiency?
infamous8803started grow question 3y ago
Is this the start of a cal mag deficiency? Leaves getting a little lighter.
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Leaves. Color - Yellow
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GrowingGrannieanswered grow question 3y ago
It's not calmag to my eye... it's a zinc deficiency... you solve this by getting your PH down a notch to between 6.2 and 6.5... It can be absorbed at 6.0 but then you run into the situation that phosphorus won't be absorbed as IT needs a minimum of 6.2... Your affected leaves will not get any better but the newer ones should show no signs of the deficiency...
Good luck
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