Seedlings turning yellow and plant leaf sides crumbling up.

Discussion in 'Marijuana Plant Problems' started by Meirens, Mar 1, 2013.

  1.  
    Meirens

    Meirens Member

    hello,

    This is the 1st time i have such problems. The plants are growing really slow, and the leafs are getting yellow. What should i do to turn them healthy green and faqster growing?

    I am using 4 CFL 23w bulbs, and 2long 37w cool white bulbs.
    Temperature is around 20C
    Strains, 2big ones are Amnesia lemon clones. 1 is Jack clone, the others are some X strain seedlings.

    01032013034.jpg
    AMNESIA LEMON CLONES

    01032013035.jpg
    X crossing, the same as in the next picture. As you can see, the plant leafs even dont look like an my plant leafs, and they are yellow.

    01032013036.jpg

    << Crossing from my 2m plant clone fem. and some autoflowering guy.
    JACK CLONE >>>>



    01032013037.jpg






    Please help :))
  2.  
    inhaleindica

    inhaleindica Active Member

    What soil and how much nutes? I am not sure if your over nuting something and under nuting something.
  3.  
    Figong

    Figong Well-Known Member

    What's your pH at? using RO / pH'd water? Any nutes? If so, which and what amount did you hit `em with? Pale green/yellow top leaves point to 2 trace deficiencies... S & Fe - but since they look to be relatively new clones, I wouldn't go on that alone, and would also consider progressive N-def.. at a quick glance. The more info you can provide us the better. If the medium is Miracle Gro, you may have a fun time with this project.
  4.  
    Meirens

    Meirens Member

    no nutes ......
  5.  
    Meirens

    Meirens Member

    Ph-7 no nutes, the medium is 6,5ph, and the water 7ph. I have a ventilator in, maybe it cooles the temperature of room, i really dont know.
  6.  
    inhaleindica

    inhaleindica Active Member

    What kind of soil is it in? Give it some grow nutes. I still can't figure out why the tip is burned if you aren't using any nutes.
  7.  
    Figong

    Figong Well-Known Member

    Miracle Gro can do that, with their time release ferts that likes to toy with smaller/underdeveloped plants.
  8.  
    Meirens

    Meirens Member

    Maybe it`s because of water? I am using water from Borehole.

    second problem is that plants are not growing, they stays at the same size. >> sollutions?
  9.  
    420 happends

    420 happends Active Member

    hmm id say try new soil like fox farm happy frog or another brand, and ph your water to bout 6.5ish then pick up some ferterlizer im currently growing some of my personal strains and i just got this stuff called sea grow 16-16-16 and my plants are loving it there getting soo big and healthy, so id try getting some type of food for your plant..

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