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What are these yellow/brown spots?

Discussion in 'Marijuana Plant Problems' started by Durden7, Sep 13, 2017.

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    Durden7

    Durden7 Active Member

    Attached Files:

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    Durden7

    Durden7 Active Member

    Bump.
     
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    Ghost of Davy Jones

    Ghost of Davy Jones Well-Known Member

    I believe there's a few different things that can cause leaves look like that. Maybe post a few more pics and a full plant shot so others can have a better look when they chime in. Hope you get it figured out man.
     
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    Durden7

    Durden7 Active Member

    Can't really see much in the pic of the whole plant. Too big Single plant in a 4x4 scrog.

    Any help is appreciated. Thank you.
     

    Attached Files:

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    Ghost of Davy Jones

    Ghost of Davy Jones Well-Known Member

    The pic isn't much help. Sorry your having so much trouble uploading a few pics.
     
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    Ghost of Davy Jones

    Ghost of Davy Jones Well-Known Member

    Looks possibly like a cal/mag issue
     
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    Durden7

    Durden7 Active Member

    this is about the best I could get :/ put in 15 more ml of cal mag today. Also this is day 5 of flower.
     

    Attached Files:

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    AmericanGrower508

    AmericanGrower508 Member

    looks like a calcium problem to me. I'm not a hydro guy..what does .5 = in ppm? I know my friend runs his at 150 ppm
     
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    AmericanGrower508

    AmericanGrower508 Member

    I just checked his thread he says he uses 8ml per gal. of cal/mag now because electric meters suck at ppm..lol
     
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    Durden7

    Durden7 Active Member

    By .5 I meant a half part. So they call for 5ml per gallon and I use 8 gallons... so 8x5=40. 40/2= 20ml. I tossed in 15 more ml yesterday so I'm running roughly... 88% full strength.. only reason I shy'd away from 100% is my tap water is 220 ppm.. and I had read somewhere that if you have hard tap water, that it was easy to give too much cal/mag because hard water is already fairly saturated with it.
     
    AmericanGrower508 likes this.
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    stoned-monkey

    stoned-monkey Well-Known Member

    looks cal. to me.
     

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