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Brown spots on leaves
WeedRunnerstarted grow question 5y ago
Brown spots showing up on leaves. Thought it was calcium deficiency. Tested the runoff, which was on the acidic side and treated it with calimagic and adjusted the ph up to 6.5 from my regular 6.2. The spots keep coming on older leaves. Not sure what to do. Please advise! Thanks
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WeedRunneranswered grow question 5y ago
Thanks for your replies! I was racking my brain over this and almost considered doing a flush on her using florakleen, which Sounds like the opposite of what i should do.
Bottom line, what you guys are saying is that she isn’t getting enough nutrients (Specifically magnesium/calcium) and i should increase calmag each feeding and make sure EC leaves are between 1.6-1.8 ... What is the best way on increasing EC levels? I have a meter but have been only measuring PPM levels till now.
Would black strap molasses help or hurt the situation when i water between feedings?
Thanks again!
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Tango_Hotel_Charlieanswered grow question 5y ago
magnesium . Its pretty bad! it takes a while to show, but often in flower is when she'll show you. begin doubling your cal/ mag nutes for a week each feeding. then drop down to 1.5 what you've been giving her till two weeks b4 harvest. Look at my first grow, i ask questions myself about it, with similar spots on mine,
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GS2020answered grow question 5y ago
Calmag should help. Keep EC levels 1,6 - 1.8. Your EC level is low.
Look this articule
https://www.alchimiaweb.com/blogen/electrical-conductivity-cannabis
good luck
Regards!
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