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Thread: Advice needed for second Autoflower grow!!! ? Burn ? Deficiency

  1. #1

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    Default Advice needed for second Autoflower grow!!! ? Burn ? Deficiency

    So, this is my second auto grow.

    Looking for some advice as she doesn’t look to good.

    Planted on 14/07

    Sprouted on 17/07

    Currently 4 weeks old since planted seed.

    I fed her last week around 0.3ml grow, 0.1ml calmag and I phd the water on last watering while feeding.

    Seems to have gotten worse since then.

    I noticed a few spots on bottom leaves prior to feeding m, removed them and thought she mabye needs a feed but problem seems to be getting worse.

    Flushed her with plain water today.

    Any advice?

    Temp currently between 25-27°C

    Humidity goes between 45-60%

    Equipment etc below!

    2x2 AC Infinity tent
    AC Infinity 4 inch inline fan
    HLG 100 rspec (lights currently on 24/0)
    Fabric pot (8L)
    7” ram oscillating fan (not currently switched on)
    BioBizz all mix ( filled bottom half of pot)
    BioBizz light mix (filled top half of pot)

    Thanks!
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  3. #2

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    Looks like a calcium/magnesium problem, do you know if you have hard or soft water, and are you leaving the pot in the runoff?

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  5. #3

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    Quote Originally Posted by Doink View Post
    Looks like a calcium/magnesium problem, do you know if you have hard or soft water, and are you leaving the pot in the runoff?
    I have soft water.

    I always empty the plastic saucer when there is water in it.

    Should I still feed grow? And up the dosage of calmag?

    Is it right to ph up/down the water when the nutrients is all mixed?

    Thanks!

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  7. #4

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    I am by no means an expert, I have been growing on here for a few years and I’m still trying to get my autos right and mine have came out like this at times and it’s mainly around week 4-5 mine go bad to, I just don’t know how to read plants, I have tried upping my calmag to 0.5ml every watering from week 2-3 I think and it has helped i think, what nutrients are you using and has any got on your leaves when watering them, I hope you figure it out and get your girl back on track
    I smoke pretty much all of the time so if I waffle shit please forgive me lol


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  9. #5

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    just noticed you had replied as I was typing Doink nice one m8

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  11. #6

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    I've run into the same issues, although I have hard water.
    Have you been using calmag since the beginning, what does the label say about quantities?
    I personally don't Ph anything in soil.

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  13. #7

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    Now youve flushed Lou I'd just sit back and observe the next few days if you add calmag or anything now you'll end u op chasing your tail
    That burnt crispy thing looks like toxicity and it couldn't cope , I'd nip that crispy one off
    And next time mate don't go with a container less than 10 litres preferably 15 litres for an auto
    Even though I'm in a hard water area I add just 1ml of vitalink calmag to 2 litres of water every second watering no nutrients yet just bud candy and the nip of calmag
    Large one 4 weeks old from seed in 15 litres of plant magic soil supreme ..less is more Click image for larger version. 

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  15. #8

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    I'd agree with Greengrass.
    You could get a 15l in there, I have a 4x2 and managed to get 3 in 15l pots.
    I also only use bio bizz light mix soil, and since the addition of some amino acids thanks to advice from Samwise, I haven't run into the same issues again.

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  17. #9

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    I'll probably get shot down here but I like to give my Autos a break from constant lights ,I've run 24/0 20/4 before and now run 18/6 and plants are right chirpier and noticed no extra stretch
    I'm that much of a tight arse though (running Hps bulbs) at 6 am I put the light on then at 9am they go in the window until the sun moves out of sight at 1pm then back under the lights until around midnight
    Only in a few more weeks I'll up the light schedule to 20/4 or if humidy is too high then that's when I go 24/0
    Food for thought anyway
    Last edited by Greengrass; 12-08-22 at 01:44 PM.

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  19. #10

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    If you PH down your water or up and miss your target and have to use the oppositt of down or up to balance the mix it ruined.

    In most cases you dont need to PH your water in soil. What kind of water does your tap provide?

    0.1mlcalmag /liter it waaaaay to little if you have soft water. You want a EC of 0.3-4 of just water with calmag before adding nutes.

    V8
    Mini veg tent grow: V8`s mini garden



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