Upper leaves turning yellow and curling downward in 2nd week of flower

Discussion in 'Marijuana Plant Problems' started by jayfury, Aug 10, 2011.

  1.  
    jayfury

    jayfury Active Member

    I have a Deadhead OG plant that is in the 2nd week of flowering... The Upper leaves are turning yellow and curling downward... The rest of the room seems fine, but this one doesnt look right... Any advice will be appreciated. :leaf:

    Attached Files:

  2.  
    Kingrow1

    Kingrow1 Well-Known Member

    Can we have pics of all the other too and without the orange glow of the hps maybe please dude. Peace
  3.  
    jayfury

    jayfury Active Member

    Heres what I have for now..... The lights are on at the moment..... I can take more tommorow morning if the HPS light is too bright..... :eyesmoke:

    Attached Files:

  4.  
    shaney

    shaney Active Member

    when you upload the pictures in true color , can you post your photoperoid, soil compisition and fertilazation schedual, also how many inches is your soil saturated too, test with your finger
  5.  
    Lord Dangly Bits

    Lord Dangly Bits Well-Known Member

    Hey there Jay, :)
    I look at your crop and see this same trouble all over the place. When my lights are on, The top fan leafs turn and stretch up for the light, like a big hard on. All of yours are drooping down.
    In your first post, your leafs have very pronounced ridges within the leaf. What conditions are the plants under. Temps, Humdidity, types of medium and nutrients. PPM fed. And both PH and PPM of a representative sample of the run off.

    hard to tell what is going on with just the photo, But I have a good idea, but more info would make it more then a guess.
  6.  
    Kingrow1

    Kingrow1 Well-Known Member

    Yer its hard to tell whats going on under hps, need normal light too see, clear good pics tell a lot. Until then yer post as many details about the grow, soil, nutes, lights etc etc that you can.

    In my opinion from what i see all plants suffer with the same problems to some extent. Whats the min max lights off lights on temps and relative humidities as well. Peace
  7.  
    jayfury

    jayfury Active Member

    Im in a timed 12/12 Schedule right now, in the 2nd week of flower. Im growing in 100% Botanicaire Coco..... Im in a sealed Room... I use Co2 (with a meter). I have AC and the room stays at 74 Degrees at all times, with 40-50% Humidity. Im using Soul Synthetic Nutes.... Im mixing my feed to a PPM of 800-900, and a PH of 5.8., I just went outside and measured the runoff waste water and it was the same ppms, and the PH was 6.5 (higher). I have been flushing with water only once per week (per recommendation of the local grow store). Is it a Nitrogen Deficiency? This is what I originally thought..... But it doesnt seem to be... Also, I was told that with Coco, you never measure the runoff water PH or PPM... Is this true? Thanks guys for the responses!!!
  8.  
    jayfury

    jayfury Active Member

    I actually have these 3 pics from last week...... The lights were off...... Same girls

    Attached Files:

  9.  
    Kingrow1

    Kingrow1 Well-Known Member

    Hey i soil grow but see a lot of variables there, i'll stick around but you need a coco grower here, ferts seem low but i know little about coco.

    Anyone grow in coco can help??? Peace
  10.  
    jayfury

    jayfury Active Member

    Anyone Else?????? Lord Dangly Bits???
  11.  
    Lord Dangly Bits

    Lord Dangly Bits Well-Known Member

    How big are the pots, and how much do you water, and how often. And also, how much runs out the bottom.
  12.  
    jayfury

    jayfury Active Member

    Pots are 7 Gallon. I water once per day, sometimes every other if they dont need it. They are taking about one and a quarter gallons on each feed. Im getting @ 20% Runoff...
  13.  
    Lord Dangly Bits

    Lord Dangly Bits Well-Known Member

    You are useing 7 gallon pots? Holy Crap dude!! That is HUGE!! I grow 6 foot plants easy in just 2 gallon grow bags.

    But anyway, give them a heavy watering with nuts and get about 30% run off. Take this run off and mix it well and take a sample. Take a PPM and PH reading of this run off. Bring back that info with the PPM and PH of what the water was when fed to them. I bet you have some wacky numbers.
    Those plants look so sad. You have to have something out of wack. How much of this Soul nutrients are you feeding them.

    Like I said, I have never used that nutrient line up. But I would mix up a batch of your Nuts in your water then PH it as you would. Then allow it to sit for 3-4 hours and take another PH reading. Some nutrients do not stabilize PH until a few hours have passed after being mixed.
  14.  
    Lord Dangly Bits

    Lord Dangly Bits Well-Known Member


    You have a build up of Salts in your coco. You should not try and correct this is just a day. Lower the PH of what you feed them to 5.2 and double the amount you give them. If you give each plant 2 gallons of water, You want 1 gallon running out the bottom. Take that 1 gallon of run off MIX it, then take a sample. Do not take the sample from the top, take it from the middle under neith the surface. This is how I do it, and it works out just fine for me. When I see leafs starting to droop on my Plants, I first check if the coco is still moist. If so, I do exactly what I have suggested and my plants have always came back to normal. It takes about a week to get your coco back into the PH range needed. Do not try and fix it in one day, you could freak your plants out.

    Check out this thread on Coco growing. Since then I stopped useing Canna Nutrients because I found that it had a salt build up problem. I could keep it in check, but it was to much of a hassle.

    http://www.rollitup.org/indoor-growing/401052-those-thinking-coco-4.html#post6090616


    :)
  15.  
    jayfury

    jayfury Active Member

    I took those samples last night......

    The PH going in was 5.9, and the runoff PH was 6.5.

    The PPMs going in are @ 800-900, and the runoff was the same...

    I will do exactly what you said starting tonight.....and take new samples of the runoff..... but I believe it will be the same readings...

    As for the amount of Nutrients Im giving them......

    They are getting around half of the reccommended dosages of what the actual Schedule says (in order to keep the PPMs below 1000, because when I mix them to the normal reccomendation (like I did on the first ones) I fried them.... The PPMs were like 1600! They are getting the following......

    3ML of Amino Aide (5-0-0) Per Gallon of H2O
    Soul Synthetics Amino Aide plant supercharger is a complex amino acid blend specifically formulated to increase plant vigor and yields. Chemists at Aurora Innovations created this blend of Amino Acids after extensive, hands-on research into compounds that can be beneficial for plant growth and yields

    3ML of Soul Grow (3-1.25-1.25) Per Gallon of H2O
    Soul Synthetics Grow is a blend of highly soluble synthetic fertility components enhanced with organic extracts for both maximum yields and spectacular flavor. It was designed specifically for increased yields and enhanced quality in versatile and demanding applications. Formulated from only the highest quality organic and synthetic ingredients and targeted to increase plant vigor for larger harvests. Soul Synthetics Grow is balanced for more of what a plant needs during its vegetative growth stage, and was purposely created to be user friendly and pH stable

    5ML of Big Swell (2-5-3) Per Gallon of H2O
    Soul Synthetics Big Swell bloom booster has been designed specifically to increase flower size, vigor, density, and quality. Our extensive hands-on research has resulted in a distinctive formula of botanical extracts, amino acids, and versatile carbohydrates combined with a specific ratio of readily available phosphorus and potassium.

    5ML of Soul Bloom (1.5-4.5-3) Per Gallon of H2O
    Soul Synthetics Bloom is a blend of highly soluble synthetic fertility components enhanced with organic extracts for both maximum yields and spectacular flavor. It was designed specifically for increased yields and enhanced quality in versatile and demanding applications. Formulated from only the highest quality organic and synthetic ingredients and targeted to increase flower density for larger harvests. Soul Synthetics Bloom is balanced for more of what a plant needs during its bloom stage, and was purposely created to be user friendly and pH stable.

    5ML of Infinity (0.5-2.5-1.5) Per Gallon of H2O
    Soul Synthetics Infinity catalyst is a complex blend of powerful organic compounds combined with choice plant nutrition. Infinity is specially formulated to increase vigor and prevent micronutrient deficiencies common in fast growing and heavy feeding plants. With its proprietary blend of distinct ingredients, Soul Synthetics Infinity can be used with any nutrient program for increased micronutrient uptake and with any base fertilizer line as a powerful plant nutrient supplement.

    6ML of Sugaree (0-0-1) Per Gallon of H2O
    Sugaree provides an organic carbohydrate and electrolyte source to stimulate amino acid production and provides a carbohydrate source. It contains polysaccharides folded into a matrix fortified with an emulsion of trace minerals. This formulation acts as a compensator as lowering sunlight levels at the end of season precipitate drops in photosynthetic rate and ATP (plant sugar) production. These additional carbohydrates provide the plant with the energy it requires to fuel respiration that drives fruit set. It's specially designed organic formulation targets increases in fruit set, retention, and sugar production.


    Im not sure how much more info Im gonna be able to give you besides all this.....


    When you say to lower the PH to 5.2 for the next feeding..... Do I do that today, then lower tommorow? Higher? Or the same? Sorry for all the questions, but Im upset to see such great looking plants in Veg, turn to shit in flower....
  16.  
    Lord Dangly Bits

    Lord Dangly Bits Well-Known Member

  17.  
    shaney

    shaney Active Member

    Ive never grown in 100% coco, so I can't say for sure. like king said , there's a few variables there, air quality and temps can be ruled out tho. your flushing so to much nutes is not the case, how ever reapeated fertilization without ph down changes the substrate ph, cause synthetics builds up salts and changes substate ph more so then soil somtimes, and coco could possibly excelerate this process , and make it hard to leach?... just a guesse , good luck. ther just in preflower so transplanting isn't out of the question, as is you don't have much to lose cause the condition is deteriorated significantly
  18.  
    Lord Dangly Bits

    Lord Dangly Bits Well-Known Member

    Oh yah. One thing I forgot. You are using Co2. When you add that to your room, you need to boost the day time temps to between 83 & 85 degrees. Co2 makes the plants want higher temps..
  19.  
    Kingrow1

    Kingrow1 Well-Known Member

    This would have been too hard for me to even attempt to solve, i wanted to grow in coco but i decided soil was way easier and much more forgiving. Coco still rocks but i just prefer soil grows and less maintenance for me.

    Those plants didnt look good though, real shame but i hope they get better. peace

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