Too many yellow leaves

Discussion in 'Marijuana Plant Problems' started by four20seven, Sep 24, 2012.

  1.  
    four20seven

    four20seven Active Member

    My gf is freaking out cause a lot of the leaves are yellow on our plant. We're just about 5 weeks of flowering. We just flushed it with 4 gal of water an molasses. It's in FFOF and I have the grow big, big bloom and tiger bloom.
    Here's some pics.
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  2.  
    four20seven

    four20seven Active Member

    I know it's a nitrogen deficiancy but I don't know which of the 3 nutes to add... Any suggestions? We will water it on Wednesday(every 3 days)
  3.  
    LT.Major Marijuana

    LT.Major Marijuana Member

    Solution to fixing a Nitrogen deficiency

    Avoid excessive ammonium nitrogen, which can interfere with other nutrients. Too much N delays flowering. Plants should be allowed to become N-deficient late in flowering for best flavor.
    A goof solid N-P-K ratio will fix any nitrogen deficiency. Any chemical or organic fertilizers that have Nitrogen in them will fix a nitrogen deficiency., Peters all purpose plant food 20-20-20 is good, Miracle grow All purpose plant food, Miracle grow Tomato plant food, (Only mixing at ½ strength when using chemical nutrients, or it will cause nutrient burn!) as well and blood meal! If you need to give your plants a quick solution to nitrogen and you want to use blood meal, I suggest making it into a tea for faster use, where blood meal is slow acting, but when made into a tea it works quicker! Other sources of nitrogen are dried blood, Cotton seed meal which is slow acting, Insect eating bat guano which is fast acting. Bone meal which is a gradual absorption when not made into a tea.( also excellent source of phosphorus). Fish Meal Or Fish Emulsion is a good source of nitrogen and is medium acting. Worm castings, which is gradual absorption. Seabird guano, All purpose Millennia Seabird guano, Orginal Seabird guano All Purpose, Crabshell ,which is slow absorption. Fox Farm Grow Big, which is fast acting. ( can bring down your ph as well)


    Now I have a question for you I recently cloned my plant and the one clone has a multitude of tiny yellow spots on the bottom leaves but the new leaves coming in are perfectly healthy what could this be?
  4.  
    Coho

    Coho Well-Known Member

    1/2 strength grow bigas thats the grow nute. That my guess.. I use GO nutes.
  5.  
    laserbrn

    laserbrn Well-Known Member

    Can you give a few more details and post a picture with the light of? This doesn't look like an N deficiency to me. I'm going to guess your soil ph is LOW LOW LOW...

    So gimme some details....

    Are you using a soil ph meter?

    RO Water or Tap?

    Adding any other nutrients like Cal Mag+?
    onefortheroad likes this.
  6.  
    four20seven

    four20seven Active Member

    For sure man.. As a heads up, I think I had salt build up, so I flushed it yesterday. Will add 1/2 dose big bloom, 1/4 dose tiger bloom on wednesday, with molasses of course.. is it cool to mix those all together in a 1 gal then water?

    FFOF, Distilled water, Ph meter (http://www.wormman.com/prod_images_large/pHtestermin1.jpg), read 5.75ish before flush, 6.5 after flush. I can't post a photo with the light off cause its at my girls place. I havent added any other nutes. Only the big 3
    This was taken yesterday during flush
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  7.  
    Corso312

    Corso312 Well-Known Member

    overdosing on the molasses can cause lockouts.
  8.  
    four20seven

    four20seven Active Member

    good to know! Ive only been dosing 1 tbsp per gallon though. I think the lock out came from the pot sitting in the run off water..
  9.  
    Coho

    Coho Well-Known Member

    Just looking at the big pics..any mites?
  10.  
    four20seven

    four20seven Active Member

    Not that i am aware of. Never fought with it before
  11.  
    plantcity

    plantcity Member

    Lose the distilled water and use tap water. Otherwise you're missing out on calcium and other minerals that naturally occur in regular old water.

    Flush every four weeks. Remember to adjust ph AFTER adding nutes.

    Your plant is still healthy enough to bud, but crystal production might be on the light side due to lockout.
  12.  
    four20seven

    four20seven Active Member

    well i just flushed and will add some nutes in tomorrow... I always used distilled because it was a good pH, where as the tap was too high and almost killed my plant in the first 2 weeks. U can use bleach and lemon juice to adjust pH right? Would I just adjust it accordingly and thats it?
  13.  
    Villa

    Villa Active Member

    What are your temps like?
  14.  
    dirtysnowball

    dirtysnowball Active Member

    that thing is starving. feed
  15.  
    plantcity

    plantcity Member

    A good flushing (one gallon of water per gallons in your container) will leave your plants *drenched*. You may need to set your container over a five gallon bucket while you flush to avoid overflow. Adding nutes tomorrow will add insult to injury. Water with nutes when the flushed soil dries out.

    You can use bottled water if you want, just not distilled. Use spring water. Do not put bleach in your water. WTF. You can use lemon juice or vinegar, but what you need to do is get some ph down from your local hydro store.

    Get your watering can ready, use spring water you've bought or tap, add half dose nutes, then test ph. If its high add half a teaspoon of ph down. Let it settle and check ph again. Add more ph down as necessary.

    Your plant is definitely not starving. It has salt build up which has locked out some nutrients and given you the yellow leaves.
  16.  
    imchucky666

    imchucky666 Well-Known Member

    White distilled vinegar from the kitchen, 1 capful from the vinegar bottle per liter of water brings mine down almost a full point.
  17.  
    *BUDS

    *BUDS Well-Known Member

    No not if you want to do it correctly. Ph adjusters are about $15 for both. This is the problem here your feeds and waterings didnt go in at 6.5 this created the yellowing, to correct the yellowing you then burnt it, your gf is right to be concerned .
    Get a digital ph meter, adjusters ,have everything go in at 6.5 and this wont happen again.
  18.  
    four20seven

    four20seven Active Member

    well heres the news and changes guys. I went to my local homies hydro store and basically he told me this late into flower, the plant barley is taking in any calcium mostly magnesium. So he suggested that I just get a Mag nutrient. At 25 bucks I said no lol. I brought up distilled vs tap, and next time with distilled, I will for sure get cal-mag. he told me to feed like normal, but also have me some "humbolts finest" thc and resin booster. This morning we fed with 1/2 tsp of each big bloom and tiger bloom, 1 tsp molasses, and 1 tsp of this thc booster. Its 0-10-15. She looks... um, not worse. Also found out that it was sitting for weeks in drainage water which im sure fucked some shit up. Had my lady promise me to drain it each night after watering lol. Thanks guys.
  19.  
    Corso312

    Corso312 Well-Known Member

    Buy some epsom salt for 2 dollars and mix up a foliar spray.

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