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Thread: Calcium deficiency?

  1. #1

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    Default Calcium deficiency?

    Noticed this today.

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    Day 26 of flower. Watermelon Zkittlez Auto in 19L pots of coco.
    Feeding Megacrop 0.8 EC @ 6.0 pH. ~20-30% runoff.
    Been at that EC for 5 days now, up from 0.7 which I had been feeding for weeks.

    I checked every leaf and this is the only one currently effected.
    The leaf was near the top of the plant.

    No smearing when touched so I dont think rust.
    Doesn't quite match up to any pest damage pictures I've seen.
    The 600w HPS (switched from MH a few days ago) seem fine at 15".

    I'm guessing early lockout (which I doubt) or early cal deficiency.
    I plan to double check runoff tomorrow; last time was 9 days ago, numbers were good. If no issues there I'm guessing calcium. If so, I guess I'll either bump the MC feed 0.1-0.2 EC or cut back the megacrop dose a bit while giving a calimagic (1-0-0) boost. Probably the latter to keep N in check.

    Seem reasonable or am I missing something obvious?

    Appreciate any thoughts. Thanks.
    ~It's a violent universe~

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  3. #2

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    Default

    Start checking your plants thoroughly for insects,I would say that is insect damage rather than a deficiency I may be wrong but check the underside of your leaves and check the stems and surface of the medium bud.

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  5. #3

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    I'd put it down as just one of those things & move on - it's only the one leaf... but, obviously, keep an eye on things
    It's Not What You Know, It's What You Can Prove

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    BeachBum (20-06-21), GEORGE (20-06-21), Mac (20-06-21), scoot (20-06-21), Sir Digby Chicken Caesar (21-06-21)

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