Yellow/white buds/tops since bloom started. Now in week 5.

Discussion in 'Marijuana Plant Problems' started by FastEddie916, Jan 17, 2013.

  1.  
    FastEddie916

    FastEddie916 Member

    Another newb here. Second grow for me and the girls are coming along. A few hickups in veg (ph) but fixed before 12/12 transition. Since the transition, this;
    20130113_113526.jpg

    Please help!
  2.  
    robert030188

    robert030188 Well-Known Member

    Looks like P-K deficiencies...what nutes are you using? Soil or dwc? PH?
  3.  
    robert030188

    robert030188 Well-Known Member

    Red/purple water leaf stems indicate Phosphorus or P and the rusting edges on your fan leaves indicate potassium or K deficiency
  4.  
    FastEddie916

    FastEddie916 Member

    Girl Scout Cookies (supposedly), 4 1000w vented lights, 4'x16' tent, 1;4 pearlite/soil, temp 77-82, humidity 50-55, co2 set for 1150ppm's, G.H. Floranova expert drain to waste regimen + calimagic currently at 850 ppm not ph adjusted, feed every 3days (when pots get light in weight). Some ph issues in veg. I was ph'n up to around 6.0 (drop/color tester) and went into lockout. Checked runoff ph and it was really green so I did some research and read that your not supposed to adjust ph in soil. Flushed and stopped adjusting ph problem solved. Now in bloom and the runoff ph is around 5.5. Should I adjust ph or not? Maybe the soil was trapping the ph up. Without adjusting ph, nute solution is acidic. Is ph even the prob? Iron? N? The yellow tops are buggin me out. Please help R.I.U.!
  5.  
    FastEddie916

    FastEddie916 Member

    Thanks for the input Robert. What about the yellow tops? Could the deficiencies be due to ph?
  6.  
    robert030188

    robert030188 Well-Known Member

    Yes most definently associated with PH...the ideal to have soil at is 6.5-6.8 PH, the fluctuation also doesn't help. What PH is the water going in?
  7.  
    FastEddie916

    FastEddie916 Member

  8.  
    FastEddie916

    FastEddie916 Member

    Before nutes?
  9.  
    FastEddie916

    FastEddie916 Member

    Im getting my new ph meter adjusted tomorrow. Im not having much confidence in the eyeball system.
  10.  
    echlectica

    echlectica Active Member

    That is most certanly a K deficiency and usually when your have a K def at this stage it comes with a P def. You can save them but yeild will be slightly diminished. Get a PK suppliment like Liquid kool bloom or the equivalent and they'll start looking better quikly.
  11.  
    robert030188

    robert030188 Well-Known Member

    In soil you always want to be on the high end...in a nutrient uptake chart soil is best around 6.5, i know what it says but soil imo has always done good a lil higher
  12.  
    echlectica

    echlectica Active Member

  13.  
    robert030188

    robert030188 Well-Known Member

    Yeah before nutes
  14.  
    FastEddie916

    FastEddie916 Member

    Liquid koolbloom is in the regimen already. Up it? I think I will adjust the ph first and see what happends. I aprreciate the help echlectica.
  15.  
    echlectica

    echlectica Active Member

    Yeah if you don't have a pH meter that is your problem but its manifesting itself as a P-K lockout. You absolutley must have a pH meter if your doing anything hydroponic and if your using hydro nute in soil you must adjust that before feeding.
  16.  
    robert030188

    robert030188 Well-Known Member

    Yeah if your regular dose doesn't work of cool bloom with new PH lvl, bump it up it can't hurt...how often do you flush?
  17.  
    echlectica

    echlectica Active Member

    Also if your putting 850ppm of Calimagic in your mix thats way too much that much Mg will lock out K in a heartbeat.
  18.  
    robert030188

    robert030188 Well-Known Member

    And do you know how much your nutes affect PH? If you can find that out it would help you greatly....sorry bro but im calling it a night...any other questions feel free to message me
  19.  
    robert030188

    robert030188 Well-Known Member

    I think he meant 850 ppm all together...if not good catch, later ya'll
  20.  
    FastEddie916

    FastEddie916 Member

    I give them liquid koolbloom.

Share This Page