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Nutrient deficiency?
Benasquellastarted grow question 3 years ago
Hello team!
Hopefully some of you professionals out there can help out this noobie.
Got some brown marks on my leaves that have cropped up in the last 3 days I've read they could be a possible deficiency? Can't write enough words in here for info
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Ezzjaybruhanswered grow question 3 years ago
No ones responded so yet so my 2 cents is calcium and or magnesium deficiency. Could be caused by too much residual salts in the medium, pH fluctuations, or just lack of the mag and or calcium.
If they popped up that quick - personally I’m flushing that medium with pHd water at about 6 pH - run at least 2-3x the amount as the pot is. So if you’re in 2 gallon pots - run at least 4 gallons thru it. Check run off EC or PPM to see if it was indeed accumulating salt build up.
Then add supplemental cal and mag to your feeds..
It’s a often good practice to flush your medium around transition to flower anyhow to push out residual veg nute salts out so they don’t cause issues with feeds in flower. Good luck
MrNObody_Growsanswered grow question 3 years ago
This is definitely a cal mag deficiency. Check PH to make sure it’s proper. Auto flower usually like less nutrients and salt build up can throw a big wrench in the program.
I would check PH then attempt a light flush to get it back in check.
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