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Rust on rocks?

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  • Rust on rocks?

    I've had these rocks for a while. I took them out to put into my tank but it looks to have some brownish/reddish stuff on it. I'm not sure but I think it's rust. What do ya'll think? I uploaded pictures in my gallery.  http://houstonfishbox.com/modules.ph...g2_itemId=2580

    Sorry for the bad pictures.

  • #2
    Re: Rust on rocks?

    i cant see much from the pictures. but it is possibly just brown alge. try taking a hard brush to it. let me know if it comes off.
    Never fear I is here
    David Abeles
    Vice President
    Greater Houston Aquarium Club

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    • #3
      Re: Rust on rocks?

      Sorry, it is petrified wood.

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      • #4
        Re: Rust on rocks?

        It's impossible for that shale to rust. It's just brown algae.

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