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What deficiency am I looking at?

Kindbud421
Kindbud421started grow question 4 years ago
So, it’s looking like I have a deficiency on 3 of the four in my 4x4. Lights are 2x kingbrite 240w 3500k and marshydro ts600. Total 570w. Lights are 30” above plants. Temp and humidity are 77-81deg F and 66% well water at 6.5 ph. Megacrop 1gpg at 1 lt each.
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Week 4
Leaves. Color - Mottling
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SmokanaganSeeds
SmokanaganSeedsanswered grow question 4 years ago
I'd add some cal mag to the mix. As it looks like magnesium to me but I definitely could be wrong. Check out the link below to help trouble shoot https://www.ilovegrowingmarijuana.com/nutrient-deficiencies-in-marijuana-plants/
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Are these blotches calmag deficiency?
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