Black patches on my substrate

Discussion in 'General Discussions and Advice' started by devesh.r, 15 Dec 2015.

  1. 15 Dec 2015 - Black patches on my substrate
    #1
    devesh.r

    devesh.r

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    Hi guys

    I noticed black patches on my substrate and my skimmer was pull out black stuff like a gel substance which has a really bad smell. Seems as something died in the tank even the substrate has this smell.

    Can any tell be what it is. I'm current removing the substrate. As my water is lookin cloudy now.

    Thank you.
     

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  3. 15 Dec 2015 - Black patches on my substrate
    #2
    OP
    devesh.r

    devesh.r

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    No fish or coral died in the tank for a very look time.
     
  4. 15 Dec 2015 - Black patches on my substrate
    #3
    Juan27

    Juan27

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    Could you post a pic?
    You must really over feed badly for it to get that bad.
     
  5. 15 Dec 2015 - Black patches on my substrate
    #4
    OP
    devesh.r

    devesh.r

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    Sorry man never took a pic. Just done removing the substrate from the tank. The water was almost black with a bad smell.
     

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