1. Help Us Improve the Grasscity Growing Journal!

    We're rebuilding the Growing Journal feature and want your input. What tools or features should we add? What other platforms do you use and love?

    Click here to share your feedback!
    Dismiss Notice

Need help help with plants in flower

Discussion in 'Growing Marijuana Indoors' started by Cazi, Sep 21, 2020.

  1. #1 Cazi, Sep 21, 2020
    Hey guys, im not sure whats wrong at the moment with my plants. They are 14 days since 12/12 today. They are fed 3 times a day by a pump/timer at 800ppm, (coco, perlite, clayball mix) the ph is 5.8.
    They are in a 1.2m x 2.4m tent
    1x 480w QB, 1x 240w QB(on low), 1 600w hps

    I suspect light burning so i have raised the lights and its not on every top node but i'm not sure as i havnt seen this before. Any help would be much appreciated. 20200921_160651.jpg 20200921_160709.jpg

    Sent from my SM-G975F using Grasscity Forum mobile app
     
  2. #2 Cazi, Sep 21, 2020
    This a picture from about 4 days ago, the problem is happening on both sides but more on the hps side. IMG_20200917_183623_961.jpg

    Sent from my SM-G975F using Grasscity Forum mobile app
     
  3. #3 Cazi, Sep 22, 2020
  4. #4 Azbud2001, Sep 22, 2020
    It looks like a pH issue.
     
  5. #5 Fromunda506, Sep 22, 2020
    Looks like a PH/lockout issue to me. I would check your runoff and see if you are rolling with a bunch of extra dissolved solids, which will push your pH down and/or cause them to lock out nutrients. Looks like at least some K deficiency showing on some of your leaf edges and sounds like you are giving them plenty of K.
     
  6. #6 Cazi, Sep 22, 2020
    I check the ph multiple times a day and it sits between 5.8-6.1, ill adjust it back to 5.8 daily. Wilst the plants are off for 12 hours they dont get fed. Should i set the timer to feed it once or twice whilst plants are off also to maintain oxygen to the roots?
    I can see i have some sort of deficiency starting not sure what tho and wasnt sure if thats whats affecting the flowers.

    Sent from my SM-G975F using Grasscity Forum mobile app
     
  7. #7 Fromunda506, Sep 22, 2020
    I would not feed them more. My ladies are in a similar media and setup and get one feeding daily at around 700. Nothing wrong with multiple feeds in coco. Helps keep ph stable, but if they are not taking everything up, nutes can accumulate fast. What is the ppm of your runoff? It shouldn’t be much higher than what you are putting in. If it is higher, I would flush til it’s not. Ladies lookin pretty good. Cheers.
     
    • Like Like x 1
  8. #8 Cazi, Sep 23, 2020
    Ive given them a good flush with 1/4 strength a and b. Refilled the res up and nuits are now at 800ppm. (Taken out terpene gold nutrient) droped my res temp to 19° celsius and checked run off was 6.1 so ive dropped my res to 5.5ph to get 5.8 run off. Hopeing i can get ontop of it before it effects my flowers.
    Would appreciate anymore input as to what i can do to help.

    Sent from my SM-G975F using Grasscity Forum mobile app
     
  9. #9 CO BlueGreen, Sep 23, 2020
    Flushing in your situation mean flushing with pH water only, no nutrient.
    Your remedy will be faster if you flush with out nutrient. After your run off readings are back to normal then feeding will be appropriate.
    Good luck.
     
    • Like Like x 1

Share This Page