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Thread: White stuff on soil

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    Default Answered: White stuff on soil

    Got some white dusty looking stuff at the top of my soil any ideas of what it is? Click image for larger version. 

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  2. "Are you using 2 part synthetic nutrients? The white stuff to me looks like salts from your feed, you get this when combinding a part A and part B together.

    The green is certainly algae like. This is down to moisture/shade and light in the room. Scrape it off as dweller has mentioned"


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    WTF is that? Do you have a better pic?

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    Quote Originally Posted by M_C View Post
    WTF is that? Do you have a better pic?
    These are as good as I can get, some green shit there tooClick image for larger version. 

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    the white stuff could be mycellium from a organic process but from the pics it looks like greenish mold there to. im not sure what it is to be honest.

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    Quote Originally Posted by kyg View Post
    the white stuff could be mycellium from a organic process but from the pics it looks like greenish mold there to. im not sure what it is to be honest.
    Let's say hypothetically it's mold, how will I combat this? Will it affect my buds?

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    Quote Originally Posted by Madscientist View Post
    Let's say hypothetically it's mold, how will I combat this? Will it affect my buds?
    ive never seen mold on the soil like that. perhaps do some googling around and see if soil mold is even possible. i will do some research as well and see what i can find but as of right now i wouldnt freak out just yet.

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    Quote Originally Posted by kyg View Post
    ive never seen mold on the soil like that. perhaps do some googling around and see if soil mold is even possible. i will do some research as well and see what i can find but as of right now i wouldnt freak out just yet.
    Cheers had a quick look, it could potentially be green algae (the green stuff) from what I can see and mycelium as you said, potentially, most likely from overwatering. I'm using autopots tho so not much I can do about overwatering, if that's what it is, if you've got any other/extra info would be appreciated but I think that's maybe what it is

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    I have had green algae a few times. Did not look like this but I catch it earlier on. Photo also not great so might look different in person. With algae I just scrape it off and let the infected area dry.

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    Quote Originally Posted by Madscientist View Post
    Cheers had a quick look, it could potentially be green algae (the green stuff) from what I can see and mycelium as you said, potentially, most likely from overwatering. I'm using autopots tho so not much I can do about overwatering, if that's what it is, if you've got any other/extra info would be appreciated but I think that's maybe what it is

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    u could use hydro peroxide to kill it but that will also kill the soil microbes. maybe try covering the soil with some fresh soil to starve the algae from the lights so it cant grow anymore and see what happens,if that is infact what is going on.. i dont think green algae will cause bud rot though.

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    Visually from the photo it looks like white and green mould.

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    Are you using 2 part synthetic nutrients? The white stuff to me looks like salts from your feed, you get this when combinding a part A and part B together.

    The green is certainly algae like. This is down to moisture/shade and light in the room. Scrape it off as dweller has mentioned

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    Do you feed them molasses ? looks a bit like the remains of it and sugar is a growth stimulator for algae in bright light, that and watering would explain the Mycelium

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    Quote Originally Posted by Blue View Post
    Are you using 2 part synthetic nutrients? The white stuff to me looks like salts from your feed, you get this when combinding a part A and part B together.

    The green is certainly algae like. This is down to moisture/shade and light in the room. Scrape it off as dweller has mentioned
    I am indeed mate, I'll scrape that off now, should I layer my soil with something to reflect the light?

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    Quote Originally Posted by AND View Post
    Do you feed them molasses ? looks a bit like the remains of it and sugar is a growth stimulator for algae in bright light, that and watering would explain the Mycelium
    Nah man funny enough you mention that g though going to use some molasses (raw cane sugar) at some point today

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    Quote Originally Posted by Madscientist View Post
    I am indeed mate, I'll scrape that off now, should I layer my soil with something to reflect the light?
    I suppose you could do but I wouldn’t bother tbh. Id make sure there’s plenty of air movement down there and keep giving the top layer of soil a move about to prevent any more developing. If there late veg early flower you could also remove any useless lower foliage or growth that’s shading your pots

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    Honestly looks like mold and algae from overwatering. Make sure you are giving multiple days between feeds. Mine are 1 and 2 months old and they both go through about 2.5 L every 4 days. Water until you yet run off and then wait until shes dry about and inch down. Because if you keep this up, I promise you, you will get fungus gnats. And I promise you, you will hate your life for it. I've been there, it sucks, avoid it at all costs. If you see tiny black buggers flying around your plants, it's already too late 😰

    And yeah I was advised to scrap off the top bit as well. Just scrap some off and replace it, letting her dry out properly, and you should be golden in no time

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    Quote Originally Posted by Madscientist View Post
    Nah man funny enough you mention that g though going to use some molasses (raw cane sugar) at some point today

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    if you are using synthetic/chemical nutes then id find out if its worth using molasses,im unsure if theres any benefit unless youre doing organic grows.

    redsiel will likely know

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