Low magnesium with Two parts dosing

Discussion in 'Reef Chemistry by Randy Holmes-Farley' started by fernandodal, Jan 12, 2018.

  1. fernandodal

    fernandodal Member

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    Hi,

    I have been using the two parts recipe Alk and Calc for the last four months. The tank has been up and running for two years and I have made water changes twice a month using Aquavitro salt. Never added magnesium.

    My Mag is at 1120, measured with Salifert test.

    Apart from the Mag stock solution that must be added to keep sulfates balance, can I use the two parts magnesium recipe 7 1/4 Mag Flake and 3/4 Epsom salt? Will It cause an imbalance and should i use the same amount of Alk and Calc I'm dosing dalily?


    Thanks everybody in advance!!!
     
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  2. Randy Holmes-Farley

    Randy Holmes-Farley Reef Chemist Staff Member Team R2R R2R Supporter R2R Excellence Award Article Contributor Expert Contributor

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    That recipe is perfect for making magnesium boosts.

    How low is it?
     
  3. fernandodal

    fernandodal Member

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    Wow! Let me say it is a honor to receive an answer from you Mr. Holmes. I have followed tour articles since I began reefing back in 2007.

    At the the moment, it is at 1120. Could It cause my LPS to recede?


    Many thanks and best regards from Spain!
     
  4. Randy Holmes-Farley

    Randy Holmes-Farley Reef Chemist Staff Member Team R2R R2R Supporter R2R Excellence Award Article Contributor Expert Contributor

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    lol. Thanks.

    It would be unusual to be that low and magnesium testing is frequently in error. The Red Sea kit especially has issues. So be sure to confirm it somehow before making a correction that big.
     
  5. Randy Holmes-Farley

    Randy Holmes-Farley Reef Chemist Staff Member Team R2R R2R Supporter R2R Excellence Award Article Contributor Expert Contributor

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    What salt mix and what salinity?
     
  6. fernandodal

    fernandodal Member

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    Ok, let me do that first, I will post the results.
     
  7. fernandodal

    fernandodal Member

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    Seachem Aquavitro and 1025.
     
  8. Randy Holmes-Farley

    Randy Holmes-Farley Reef Chemist Staff Member Team R2R R2R Supporter R2R Excellence Award Article Contributor Expert Contributor

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    I’d be sure to double check the level before dosing.
     
  9. fernandodal

    fernandodal Member

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    I have tested four times using Salifert, average 1190.

    Should I increase my Mag a bit up?
     
  10. Randy Holmes-Farley

    Randy Holmes-Farley Reef Chemist Staff Member Team R2R R2R Supporter R2R Excellence Award Article Contributor Expert Contributor

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    I mean double check with a different kit. But upping the magnesium by about 100 ppm is an ok plan since even if it is already normal, bring higher is also ok.
     
  11. fernandodal

    fernandodal Member

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    I will try to check with a different brand. Thank you very much for the replies
     
  12. Randy Holmes-Farley

    Randy Holmes-Farley Reef Chemist Staff Member Team R2R R2R Supporter R2R Excellence Award Article Contributor Expert Contributor

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    You're welcome.

    Good luck :)
     
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