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Thread: Brown Leaves Day 49 Since Sprout

  1. #1

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    Default Brown Leaves Day 49 Since Sprout

    Critical Jack Auto. Seems to be approaching harvestm but these leaves are browning. Any idea what it is?

    Feeing 1ml / L BIOBIZZ BLOOM in BIOBZZ ALLMIX medium. Light 300w led. Temp about 24 - 25c.

    warm regards

    R
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  3. #2

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    at first glance it looks like heat stress but cant be since ur temps are low
    might be nute burn depending on how often you feed
    1 other thing i read is that if the leaf dies check the bud for rot .

    im a noob tho mate so wait till someone else comes along

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  5. #3

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    Is that browning or purpling.... many strains will go purple towards the end.


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    Quote Originally Posted by Skunky n funky View Post
    Is that browning or purpling.... many strains will go purple towards the end.


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    I'd say it was browning, you can also see tip burn
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    What is your light schedule? Is there a temp swing? How cold does it get at lights out? I see this when my plants get cold durring lights out.

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  11. #6

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    Quote Originally Posted by plasticdollman View Post
    Critical Jack Auto. Seems to be approaching harvestm but these leaves are browning. Any idea what it is?

    Feeing 1ml / L BIOBIZZ BLOOM in BIOBZZ ALLMIX medium. Light 300w led. Temp about 24 - 25c.

    warm regards

    R
    It looks like a phosphorous issue. If the temperature gets cold all of a sudden it can cause the plant to uptake more phosphorous and cause the purple leaves...Most nutrients have plenty of P, especially if using a Bloom nutrient which is odd this would be happening if currently feeding Bloom. Some plants are known to take up phosphorous pretty quickly though

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    Light schedule is 24 hours. I was planning on flushing the plant today after checking for mould, etc. Temp is pretty constant 23 - 25c. I have heaters.

    warm regards

    R
    Last edited by plasticdollman; 12-11-18 at 08:32 AM.

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  15. #8

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    Default light burn

    LED is almost like little lasers shooting down on your plants! They can be very intense and when you run them for 24hrs then the leaf tissue gets damaged. I would give them at least 4hrs of darkness or raise them a few inches. Your problem is light burn!

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