Interesting Find

Discussion in 'General Discussions and Advice' started by Shaun, 24 Jul 2008.

  1. Shaun

    Shaun Retired Moderator

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    During cleaning of my substrate that I removed in going BB, I have noticed that it contained Iron in it. The only source could be from the crushed coral or the red sea [FONT=Arial, Helvetica, sans-serif]Aragonite[/FONT] that I used. After using a magnet found the even some small "rock" stuck to it.
     
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  3. jacquesb

    jacquesb Retired Moderator

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    Hhhhhh - that is REALLY interesting Thalion. And definitely NOT good..... I wonder how it got there?
     
  4. Mike

    Mike Retired Moderator

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    The dangers of scooping sand from the beach/sea, i always run a magnet through it after someone found a screw in a new bag of live sand.
     
  5. jacquesb

    jacquesb Retired Moderator

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    Wee-Man - I think that Thalion actually mean BOUGHT aragonite and crushed coral.
     
  6. vzyla

    vzyla

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    Not good!
     
  7. Shaun

    Shaun Thread Starter Retired Moderator

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    Yes it is the bought stuff.

    Most of it is so fine it floats up when you spray the substrate with a hose pipe. Must have come with the crushed coral or [FONT=Arial, Helvetica, sans-serif]aragonite and relesed when the stuff degrades.
    [/FONT]
     
  8. Shaun

    Shaun Thread Starter Retired Moderator

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    Don't think It had any ill effect on the tank, as things were doing OK. Still plan to use the stuff in the refrigerium.
     
  9. Mekaeel

    Mekaeel Moderator MASA Contributor

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    So now looks like we got to start running magnets over the substrate we buy.Cant even trust that.
     
  10. Mike

    Mike Retired Moderator

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    So did i but where do you think it came from?
     
  11. vzyla

    vzyla

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    That is somewhat scary. how much is there? could there not be some other source?
     
  12. Shaun

    Shaun Thread Starter Retired Moderator

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    Don't some PO4 removers use Iron.

    From what I remember a small amount of iron is ok.
     
  13. 2balive

    2balive

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    Hi

    Experiencing the same with oolite (also bought), I broke a thermometer in the tank and use a magnet to pick up the little iron balls in the tank, had quite a lot of the substrate sticking to the magnet.

    Did the same with other substrate I had, same result.
     
  14. viper357

    viper357 Admin MASA Contributor

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    I can recall a thread on this subject, I think it was millepora that found a few pieces of iron in his aragonite and actually sent it away for testing, the test results came back all ok and there was nothing to worry about.
     
  15. Mekaeel

    Mekaeel Moderator MASA Contributor

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    Yes.Rowaphos being one.
     
  16. Shaun

    Shaun Thread Starter Retired Moderator

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    Thought so.

    Does not look like it rusts.
     
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