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Thread: problem with leaves cupping

  1. #1

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    Default problem with leaves cupping

    in coco 15ltr pots ph 5.8 canna a+b calmag 13/14 base ec 0.6 ec 1.4 temp 27-19 osillating fan 6" extracor 5" incoming in2mtr tent 600hps 700 led.
    my problem is few days ago leaves started to cup up and the edges look a bit weird thought the fan might b to close but rectified that first was one now the same problem seems to be happening on 3 plants.
    any ideas or suggestions as this really pissing me off as seems to be one thing after another and getting to the stage i cant be arsed with it.

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    MonsterEnergy (06-11-17)

  3. #2
    MrChedHead Guest

    Default

    When leaves start cupping up like a taco its usually down to high temps or radiant heat, i have some nice taco leaves under the bulb due to trying me dam hardest to run a 600 to no avail 🙄


    Sent from my iPhone using Tapatalk

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    blackwidow68 (07-11-17), MonsterEnergy (06-11-17)

  5. #3
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    cupping up at the very ends or canoeing together?

    it's hard to say without pictures, could be heat or a swing in ph
    some plants also do it to expel more moisture,

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    blackwidow68 (07-11-17)

  7. #4

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    Click image for larger version. 

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  8. #5

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    Have you got any pics?

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    blackwidow68 (07-11-17)

  10. #6

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    Great - but can you show us some pictures of cupping leaves? ;-) - looks pretty cool to me.

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    blackwidow68 (07-11-17)

  12. #7

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    the leaves are turning up like tacos ...cupping how ever u describe it...they are not kewl lol why im here asking some advice

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    it's more than likely 'heat stress' sometimes it can be very high/low rH,
    tbh it isn't that bad currently, has your heat or rH changed alot in the past few days?

    one of my girls done the same 'canoeing' was only that one girl when i was dropping my rH to 40% in late flower,
    Last edited by MonsterEnergy; 07-11-17 at 12:13 AM.

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    blackwidow68 (07-11-17)

  15. #9

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    looks like heat but 27c?? where is your temp reading at buddy? is it at plant canopy?
    whats your humidity ?
    make sure you take a temp reading from the top of the plants so you can see the temps that are hitting the plant tops.
    temps at the plant canopy will be higher than the room you see buddy

    another thing i notice,,,
    are your fans on a controller because you have a 6" out and a 5 " in,
    with your filter on the 6 inch you may not be getting enough negative pressure that you want to keep smells contained.
    Last edited by ENGLISH_HERBSMAN; 07-11-17 at 01:36 AM.
    if i help drop a THANKS its free

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    blackwidow68 (07-11-17)

  17. #10

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    27c at top of plants,i have back my lights of a bit,maybe i need more humidity as about 43% with lights on in the 50s in dark.
    how long would it take for them to return to normal?

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