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What is the health issue on this leaf?

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    #1

    SOIL What is the health issue on this leaf?

    Today I found one leaf with these whitish marks but they are not rounded like the fungus septoria presents itself (See attached photo of the leaf).
    1. I have been careful with the PH in every watering always 6.20.
    2. The Humidity has been very well controlled targeting 45% because my Gorilla Glue is Flowering (18 days).
    3. Temp well controlled between 72 F and 82 F.
    I am thinking of spraying Neem Oil on the leaves not on the flowers.
    I have attached a photo of the leaf with the marks and one where it shows it is flowering.m (See 2nd photo to see the flowering stage)
    Anyone has seen this before? What should I do?
    btw, I checked the Health Plat guide at growweedeasy https://www.growweedeasy.com/cannabis-symptoms-pictures
    ​Any help will be appreciated. Thanks in advance.
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    #2
    Maybe thrips. Spray with soapy water works if it is them.
    Grow Room: 11' x 7' x 7.5'H, 480w AC, 13gal/day dehumidifier, 1.5gal ultrasonic humidifier, 60gal (27gal usable) nute tank, 16" pedestal fan & 18" wall fan. Lighting, fertigation and climate automated
    Lights: 2 x SF-7000, 5 x 30w 660&730nm supp. red boosters for flower
    Medium: Coco/perlite, 13gal pots for photos, 7.2gal pots ¾ filled for autos, no drains
    Current Grow: ​​​4 x Autos Franklin's AK47 x Red CBD, 1 x Photos Franklin's Orange Zkittles x Sour Diesel, 1 Franklin's White Widow x Sour Diesel, All feminised. 1 x sativa, I think, regular, Clones 30th March 5 x Orange Zkittles x Sour Diesel fem
    Last Grow: 4 x photos, old school, 66 days of veg flipped 25 Feb harvested day 65F 3lb11oz.
    Previous Grow: Lots of big dead mouldy buds, medium and small buds made it, barely. Primarily indica traits from sativas.. Cured in glass jars.

    Comment

      #3
      Thank you Bluey!!! Fyi, i did check the leaf on both sides with a 60x magnifier and there were no insects. I did find that a PH issue and insufficient Calcium looks similar to my leaf. I was aiming for ph 6.2 but i will aim now for 6.5.
      Fyi, i will remain vigilant and if I see any Insects, i will spray soapy water and Neem Oil. Thank you for replying!!

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