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Thread: Nutes or lights issue

  1. #1

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    Default Nutes or lights issue

    Mornin all, got an issue arising with the 3 oldest plants. I'd been using bio canna veg and flower nute no issue, stopped with veg and added bio boost even though I'd been warned autos don't really like boosters, silly boy lol, so I'm guessing that the problem is boost as it's only on the 3 I gave the boost to. I had this same problem last grow but put it down to light burn as it happened after I swapped the cfl for led and the other plant I gave boost to last grow didn't have any problems.

    Moved the light up to 20 in just in case but the other 3 plants are the same height and not affected, also not had any boost. Yesterday I flushed the 3 affected with 30 ltr water each to be on the safe side.

    Soil or hydro or coco: soil

    Strain: pineapple glue auto, Zkittles auto

    Photo or Auto: auto

    plant age: 10 wks

    pot size: 12 ltr

    has it been repotted? and when?: no

    soil type: bio canna

    nutes or additives used and how often for soil: bio canna flower and boost. 2ml per 1 ltr of flower every other water ( fed about every 5 days) . Last 2 feeds had 1ml per ltr of boost then 2ml per litre of boost.

    Air temps (max min): 24.6-27.4

    Res temps (max min):

    humidity: 43%-52%

    lighting type and wattage (hps, led, cfl): Led 140w draw, 1x300w dual spec cfl

    Light schedule: 24-0

    ph level:-






    Worst lookin one



    https://www.thctalk.com/cannabis-for...e-1x-Glueberry

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  3. #2

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    Default

    I would say heat but wait for more experienced poster. I've just looked up a chart online and it's identical to the heat stress pic.
    STICK YOUR SKINS AND SPIN UP

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  5. #3

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    Quote Originally Posted by cough View Post
    I would say heat but wait for more experienced poster. I've just looked up a chart online and it's identical to the heat stress pic.
    Ah ok, I've been letting it get as high as 26.5-27c ish, read that using led was better with higher temp.

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    Quote Originally Posted by MrCannab1sir View Post
    Ah ok, I've been letting it get as high as 26.5-27c ish, read that using led was better with higher temp.
    Yes but what I didn't know about LEDs is that you have to watch your distances. How close are your lights to the plants? The ambient temp seems fine.

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    They'd been fine at suggested distance for each stage, been at 18 insch for weeks, only moved it up 2 inch to 20 inch just in case. Plus the other 3 are same height and not affected, would have thought it would have got everything if it was light burn

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  11. #6

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    Quote Originally Posted by MrCannab1sir View Post
    They'd been fine at suggested distance for each stage, been at 18 insch for weeks, only moved it up 2 inch to 20 inch just in case. Plus the other 3 are same height and not affected, would have thought it would have got everything if it was light burn
    Yes, think you're right. It does look like the pic though

    Click image for larger version. 

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    Don't think your leaves are down turning too much either. Maybe it is nutes after all. Someone will be along in a minute.
    Last edited by cough; 22-02-20 at 01:10 PM.

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    Quote Originally Posted by cough View Post
    Yes, think you're right. It does look like the pic though

    Click image for larger version. 

Name:	light-bleached-bud.jpg 
Views:	55 
Size:	67.7 KB 
ID:	379950

    Don't think your leaves are down turning too much either. Maybe it is nutes after all. Someone will be along in a minute.
    Yeh mate it's almost identical but my leaf tips are turning upwards, only done 1 grow before so it's all still a learning curve

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    Also just noticed this with the glueberry, same treatment, about a week or 2 younger than the other 3. No boost for this one, just 1-2 ml veg/flower doses max. Not a lot of airflow between plants atm but turn regular

    All have been having ot organic mag, 3 times through the grow


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  17. #9

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    Quote Originally Posted by cough View Post
    Yes but what I didn't know about LEDs is that you have to watch your distances. How close are your lights to the plants? The ambient temp seems fine.
    Great point, I've seen all kinds of strange deficiencies on the tops of plants when the LEDs are too close. The most common is calcium but I've seen all kinds of weird stuff.

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