pH issue/CalMag deficiency or lockout?
jcbudstarted grow question 6y ago
6/16/20: Worrisome signs of pH issues perhaps with CalMag lockout? I adjusted pH to 6.56 RO+MegaCrop (1/4 teaspoon/gal) @ 185 PPM. 400mL total vol
Measured runoff water @ 6.38 pH
6/17/20. Plant perked up after watering. Still bad marks on leaves. Do I need CalMag?
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NobodysBudsanswered grow question 6y ago
It didn't drop far, so it's not far off... try to raise pH a bit more i think it's fine.
Get that to 6.5-6.8 and see how that impacts the chemistry of all th evarious nutes invovled, then adjust concentration and or ratios of what you feed after you find some stability.
adding stuff before you are certain only makes you feel better. Don't let that impulse be a reason. Find a cause...
life works on cause and effect.
MrBlocc420answered grow question 6y ago
Look like your having a nitrogen deficiency,
A cannabis nitrogen deficiency will cause the older, lower leaves on your plant to turn yellow, wilt away and eventually die. The plant typically appears pale or lime-colored.
The yellow leaves of a nitrogen deficiency may show signs of brown, and they will usually become soft and sort of “fold” in, before possibly turning crispy but ultimately falling off on their own. Hope that helps you.
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