Deficiency or not?

I_roll_my_own_420
I_roll_my_own_420started grow question 6y ago
Hello, anyone knows what could it be? Some of the leaves on one of the plants have little yellowing. Plants look healthy, week 4 and 1/2 of flower. No bugs in my tent 100%. Thanks for help! 🤓
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Leaves. Color · Yellow
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JesusChrist
JesusChristanswered grow question 6y ago
Beginning of a calcium magnesium deficentcy? Maybe?
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