New DIY Two Part Recipes with Higher pH Boost

Discussion in 'Reef Chemistry by Randy Holmes-Farley' started by Randy Holmes-Farley, Dec 17, 2017.

  1. Toomanyfish

    Toomanyfish Well-Known Member R2R Supporter Build Thread Contributor

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    Thanks
    Don’t want to throw anything off over a misinterpretation ;Bookworm
     
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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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    Maybe start slow by making the same concentration as you use now. :)
     
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  3. Toomanyfish

    Toomanyfish Well-Known Member R2R Supporter Build Thread Contributor

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    Will do
     
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  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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    Let us know how it works out. :)
     
  5. Clownman727

    Clownman727 Active Member Tampa Bay Reef Keepers

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    can Somebody recommend a good scale and where I can get the chemicals for the calcium and magnesium solution?
     
  6. redfishbluefish

    redfishbluefish Stay Positive, Stay Productive R2R Supporter R2R Excellence Award Reef Squad Leader Article Contributor Build Thread Contributor NJRC Member

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    Can't comment on the scale, but calcium and magnesium chloride are available from BRS.
     
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  7. Mindi

    Mindi Active Member

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    Randy, I have 2 questions

    1. As I use anhydrous CaCl2 should the 20% reduction in volume be applied as in Recipe-1...?

    2. I almost never need to dose the Mg part of the standard recipe-1 as I never see my Mg below 1350 and usually more like 1450 ... I put this down to my NSW water changes but for whatever reason it appears I rarely need to dose Mg. Can I just omit it from the Calcium part of the new recipe...? or would that have other implications.

    Thanks..John
     
  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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    Yes to the anhydrous.

    I'd personally add the magnesium and then not worry or measure it for a long time. It will add very little, and really shouldn't cause magnesium to rise substantially. I think the risk of overdose is super low. People using commercial two parts with the magneisum in it do not see overdoses.

    Also, many people have faulty readings on magnesium kits. If you do not add any and use NSW, I cannot; see how it would ever get to 1450 ppm unless the salinity was very high.

    That said, you could leave it out if you really want.
     
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  9. Mindi

    Mindi Active Member

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    Starting the NaOH version today. My starting parameters are
    Dosing Alk part 38mls day , Ca part 43 mls day
    Readings (both Hanna eggs)
    Alkalinity 4.0
    Calcium 425
    and pH is 8.0 on my meter with no CO2 scrubbing in place

    See what happens, starting with no change to dosing regime but new mixes.
     
  10. Mindi

    Mindi Active Member

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    Thanks..got that..will put the Mg part in and measure in a month.
     
  11. 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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    Great. Looking forward to the results. :)
     
  12. Servillius

    Servillius Active Member R2R Supporter Build Thread Contributor

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    So I mixed up the Sodium Hydroxide version at 3x the recipe above (for twice the concentration of ESV). Here are a few quick notes from my kitchen.

    1. Most of these chemicals get really hot when they react with water. I sort of remembered this but was still surprised by how hot. Be patient.

    2. There’s a lot of solids going into the Cal/Mag mix. Don’t start with too much water.

    3. At this concentration the Cal/May mix is getting fairly opaque. It’s still surprising how much water can dissolve.

    4. A drop of the alk mix turned gellike when it hit the water but as soon as it found some movement it appeared to dissolve completely.

    Thanks again Randy! If this works out the reduced volume required will be a blessing given that I have a fairly small, hard to access space for my two part reservoir (now three part).
     
  13. 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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    Great update! Thanks. :)
     
  14. Mindi

    Mindi Active Member

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    Actually, I have just dumped my Mag test kit and bought a new one (Salifert) and it tests 1150 repeatable. You were saying..?
     
  15. 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
     
  16. jeffp1

    jeffp1 Active Member

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    Would it be alright to substitute Epsom salts in the place of the Mag. Chloride hexahydrate? In researching this, seems like the difference is a couple of molecules of water. My Magnesium normally stays above 1400, so I am considering just leaving the Magnesium out.
     
  17. redfishbluefish

    redfishbluefish Stay Positive, Stay Productive R2R Supporter R2R Excellence Award Reef Squad Leader Article Contributor Build Thread Contributor NJRC Member

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    Epsom salt is magnesium sulfate, not magnesium chloride.
     
  18. jeffp1

    jeffp1 Active Member

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    I understand that one is Sulfate and one is chloride. Being adding the Magnesium is not required, can Epsom salt be substituted for the chloride. Didn't want to buy other chemicals if I didn't need to.
     
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  19. JimWelsh

    JimWelsh Well-Known Member R2R Supporter

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    You cannot mix magnesium sulfate (Epsom salt) in with the calcium part, because insoluble calcium sulfate will precipitate out if you do.
     
  20. 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 cannot make an exactly balanced two part using Epsom salt only as it may be a little heavy on sulfate. But you can make a usable two/three part (not yet modified for hydroxide):

    Aquarium Chemistry: A Homemade Two-Part Calcium And Alkalinity Additive System ? Advanced Aquarist | Aquarist Magazine and Blog
    http://reefkeeping.com/issues/2006-02/rhf/index.php
     
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