Hydrated/slaked lime

Discussion in 'Water Parameters and Additives' started by Mtroboer, 17 Sep 2008.

  1. Mtroboer

    Mtroboer

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    Hi guys I got 50kg's of this stuff mahala. Can get it from the suppliers @ R30 excl./25kg bag. Would I be able to use it on my reef? Here is a pic:

    [​IMG]
     
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  3. jacquesb

    jacquesb Retired Moderator

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    MtroBoer - could you perhaps get a chemical composition of this slaked lime?
    I think it SHOULD be safe. BUT it might possibly contain some impurities.

    Perhaps you can mix a very small amount up with some RODI water, and send a test-sample to LappiesReef to test for us? If Lappies would be willing to do this test?
     
  4. Mtroboer

    Mtroboer Thread Starter

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    Hi Jacques, here's a chemical composition chart I got from the PPC site:

    Chemical formula Ca(OH)2 Alternative names / description Slaked lime, Calcium hydroxide, Hydrate
    Typical chemical analysis
    Typical %
    Available calcium as CaO 69,0
    Total calcium as CaO 72,0
    Total magnesium as MgO 1,2
    Manganese as Mn2O3 1,0
    Iron as Fe2O3 0,5
    Aluminium as Ale2O3 0,3
    Silica as SiO2 0,8
    Carbon dioxide ( CO2) 1,0
    Combined moisture 23,0
    Free moisture 0,3

    The only thing bothering me a bit is the silica.
     
    Last edited: 17 Sep 2008
  5. viper357

    viper357 Admin MASA Contributor

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    Aluminium and Silica doesn't sound good.
     
  6. Mtroboer

    Mtroboer Thread Starter

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    Anybody got a chart on the composition of pharm grade slaked lime?
     
  7. Mtroboer

    Mtroboer Thread Starter

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    Yip that's also what is bothering me a bit!:whistling:
     
  8. Alan

    Alan Admin MASA Contributor

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    Silica in that amount i dont think too serious, but the aluminium??????
     
  9. jacquesb

    jacquesb Retired Moderator

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    That's really awesome MtroBoer. I don't REALLY think that in the tiny quantities that we add to our tank water, the aliminium and silica would make any difference....

    Sea water also contains these as trace elements.......
     
  10. Shaun

    Shaun Retired Moderator

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  11. jacquesb

    jacquesb Retired Moderator

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    Thanks Thalion - I know about the effects of TOO much aliminium on our inverts.... very similar to copper....
    The important words are: "in elevated levels".....
    BUT - actually - my personaly belief is that this still has to be proven!
    This article quotes the quantities in which aliminium becomes "toxic", and also the figures for al volumes in NSW.....
     
  12. cybervic

    cybervic

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    If its not food or pharmasuetical grade I will not put it in my tank
     
  13. lIghty

    lIghty

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    I agree with Cybervic here.....
     
  14. Mekaeel

    Mekaeel Moderator MASA Contributor

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    What about slaked lime found at Sport shops? The stuff that the body builders use on their hands to lift heavy weights. Is it safe?
     
  15. Warr7207

    Warr7207

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    I wouldn't risk it, when you consider how much cheaper the BP grade stuff is at your local chemist
     
  16. Mtroboer

    Mtroboer Thread Starter

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    Thanks, would then rather say thanks, but no thanks!!:thumbup: The only thing bothering me about the lime you buy at the chemist is the small amount packaged(20g). Would then rather stick to the Aquilibria Aquikalk I currently use.
     
  17. Warr7207

    Warr7207

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    Agree, But I buy 10 x 50g = 1/2kg at a time and costs only R40.00
     
  18. Andreas

    Andreas

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    wow that would've been a life time supply:p you could've started your own coral farm and given away coral for free:whistling:
     
  19. Mtroboer

    Mtroboer Thread Starter

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    Something like that....:P:lol::lol:
     
  20. Mtroboer

    Mtroboer Thread Starter

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    Which brand do you use Warr? Would like to see if my chemist could also get it in 50g!
     
  21. Warr7207

    Warr7207

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    Diskem
     
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