Leaf discoloration, copper-yellow shine

Discussion in 'Sick Plants and Problems' started by VanBrando, Jun 4, 2019.

  1. 2019-06-02 001.jpg 2019-06-02 009.JPG 2019-06-02 010.JPG 2019-06-02 011.JPG 2019-06-02 014.JPG 2019-06-02 016.JPG 2019-06-02 018.jpg

    Hey guys,

    Hoping someone can help me figure out what's going on with my three "Early Miss" autoflowers.

    Journal here:
    First Grow with QB96's - "Freedom Dream" & "Early Miss autoflower"

    Some details:
    Light: 2 x QB96 LED lights
    Lighting schedule: on @ 6pm, off @ noon (just started first week of 18/6, was 20/4)
    Medium: FFOF soil, Black Gold Seedling Mix, Gaia Green veg and bloom dry amendment
    Nutes: Remo Nutrients (no more than 25% strength)
    Water schedule: usually every other day, occasionally skipping an extra day.
    Feed Schedule: Feed, Feed, Water, Feed, Feed, Water, Water
    Temperature: 72F to 84F
    Humidity: 55%-60%
    Exhaust fan: 6" AC Infinity, ducted to outside
    Intake: 4" passive intake, ducted to outside (less than 10ft of duct)
    Circulating fans: 1 on 24hrs, 1 on only during lights-on.

    They're currently on day 33 from seed, and on their first week of flower.
    I switched my Remo Nutrients from the veg combo: micro, grow, velokelp, magnifical,
    to the flower combo: micro, bloom, velokelp, magnifical, nature's candy, astroflower.

    Been doing about 2ml ea per gallon of water, which is 25% recommended strength.

    I've been struggling with some warmer temperature over the past 2 weeks.
    Average temp is about 79F but occasionally will reach 83F for a few hours.
    I know these haven't been happy because of it but i've reduced my lights-on from 20hrs a day to 18hrs and aligned lights-off with the hottest time of the day, which is helping.

    Any help on what's causing the discoloration would be greatly appreciated!
  2. I think you should research Broad and Russet mites. I'm not saying you have them but a couple of your leaves do look similar to mite damage. I'm talking about the leaves with curled up edges and discoloration between veins.
  3. Yikes, the one thing i was hoping not to encounter was pests...
    I've noticed that the leaf curl has been coinciding with my high temperature issues... but i did take a quick look at some Russet mite photos and i can definitely see how there's some similarities there, also with the glossy sort of effect on the leaves as well.

    I'll have to dig out the old microscope to see if i can spot any of the little buggers... but i'm still really hoping it's just a nutrient/pH/other issue!

    Thanks for the reply.
    • Like Like x 1
  4. Since looking at Russet mite damage pictures, I see mites in my sleep. To see them you'll need your microscope, they are fucking tiny.
  5. Well, damn if i didn't spend over an hour and a half with a magnifying glass, and then a microscope to see if i could spot any signs of pests...
    Fortunately, i didn't see any, but i did find little pieces of what looked like shiny dirt and i'm wondering, could it be mite excrement?!
    I had to really magnify to see these little bits... they're pretty much invisible to the naked eye.
    1.jpg 3.jpg 4.jpg 6.jpg 7.jpg 8.jpg 9.jpg

    I did also happen to notice that the plant that's worst affected with leaf discoloration is showing some of the stems of the leaves starting to purple.
    Typically, i've thought that this was indicative of a magnesium deficiency, or pH issue... but have been reading it could be due to heat stress or over-watering.
    Pretty sure i'm doing okay on the watering.
    Yesterday I increased the intensity of my LED's, but i also moved them up, a bit further away from the canopy. After 12hrs i did notice some slight improvement to the leaf curl, (or was it just wishful thinking?!...LOL).

    Anyways, here's a few more pics:
    2019-06-04 004.JPG 2019-06-04 001.JPG 2019-06-04 005.JPG 2019-06-04 008.JPG

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