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Deficiency/Light Stress Issues
Noelastarted grow question 4 years ago
What else can I do? Brown curled tips and spots on older fan leaves climbing up towards main cola. Flushed with pH’d RO yesterday, but was only able to get pH to 6.7, also added small dose CalMag at end of flush. Light wattage has also been reduced by half for the last week.
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Leaves. Tips - Burnt
Leaves. Color - Yellow
Leaves. Color - Dark-brown
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blendmedmedmananswered grow question 4 years ago
keep flushing and get that ph lower, the leaves i would not worry about fixing that damage is done, now cut them off the plant so the energy goes back to the buds, your cultivating those not the fan leaves, get rid of the dead and focus on the living
The8thChevronanswered grow question 4 years ago
You've done everything right. Buy some pH Down, it's pretty cheap! Until then you can use white vinegar or lemon juice, but this should only be very temporary.
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Mr_Weeds_Autosanswered grow question 4 years ago
Your ph is off, it should be between 6.0-6.5. The ph being too high is causing a lockout of some sort, so you've gotta keep flushing until the ph is correct.
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