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Brown spots on leaves?
FirstGrowstarted grow question 5 years ago
I have brown spots on one out of my 3 autos, it's mainly on one leaf. Does anyone know what this is?
450w via spectra LED
4gal pots
coco & perlite 70% - 30%
GH trio + calmag
1L each every day - 2.5ml calmag, 4ml micro, 1ml gro, 5ml bloom 6.2-6.5 ph [no runoff].
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Leaves. Color - Dark-brown
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OGgrowsanswered grow question 5 years ago
I've been researching better and really Grey_Wolf seems to be right. due to the leaf symptoms it seems to me to be calcium deficiency, since you give calcium every day but the roots are unable to absorb it, sometimes it is derived from the accumulation of mineral salts. try to make a flush and apply calcium if it doesn't work it is best to use a substrate cleaning solution and then apply the calcium
Mrs_Larimaranswered grow question 5 years ago
And you feed every day 5ml Of bllom and the other stuff=? well then my opinion is a case of overfertilising
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Mrs_Larimaranswered grow question 5 years ago
Iam having the same Picture on my previous grow. I grow with fertilisers in the soil, and have some booster tablets.
Now the story begins, I had different booster tablets i the pack and i di not know wich is for vegetation boos ind wich for bloom boost
So i took the wrong one .. noticed it later and gave them 10 days later the right one...
And now i have those foogin marks on the leaves. Little brown rusty spots and looking like yours.....
So in my case it was an overfertilising--- wrong fertilising
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Grey_Wolfanswered grow question 5 years ago
@FirstGrow looks a lot like calcium deficiency
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