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A few bleached top fan leaves
exclusiveX420started grow question 3 years ago
Can someone help me determine a cause of the bleached leaves? Lights have been safely set. Water temps under 75, conditions 55 humid and 75 degrees. GH Flora series+ supplements. Dwc hydro pots. New to hydro. Never had this really with a soil grow. Thanks for any input.
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Leaves. Color - Yellow
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growbvilleanswered grow question 3 years ago
Do you know the PAR levels of your Lights? So many things can cause this. I had similar issues.
Here are some of the causes I ran into.
1. Lights turned up too high
2. Calmag deficiency
3. PH issues (Had to recalibrate my PH meter.)
4. Spider Mites.
I finally got mine turned around, but it took solving all the issues above to get the leaves to stop doing this.
One thing I did to help was remove the damaged leaves after an adjustment so I could see if it corrected the problem. Just from experience I have never seen the plant repair a leaf. If I left them, the plant just killed them off on its own.
Rodamis_Primeanswered grow question 3 years ago
You have a magnesium Def right there . So what I would do first off is give that plant enough water to get run off and test the ph of it to make sure your in that 5.8 to 6.5 range . If your in that range then feed cal /mag . The damaged leaves will never repair but I would pull them off right away . Usually in my cases the leaves will stop getting worse then you know you have got it fixed . If they continue to get worse then you you need to keep working at it . Once you do get it under control then you can pluck them off :) Hope this helps . Also by leaving the damaged leaves on If it continues the plant has these leaves to deplete before moving onto other leaves.
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