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  1. We are after as many aquarium plant images that we can get, doing so will assist us in completing the aquarium plant database.

    https://barrreport.com/threads/aquatic-plant-images-wanted.14374/
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Question about CaCl2*2h2o

Discussion in 'Aquatic Plant Fertilization' started by nilocg, Apr 3, 2014.

  1. nilocg

    nilocg Prolific Poster

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    Can someone help with with figuring out the PPM Calcium and dGH with the following:

    Adding 210grams CaCl2*2h2o into 500ml RO. Then dosing 1ml into 1 gallon.

    What will the resulting PPM of Calcium be? What about dGH?

    I used a fert calculator which came up with:
    Compound/PPM
    Ca/30.239
    Cl/53.5
    dGH/4.22

    Is this correct? It seems the dGH is about double what is should be? Any help would be appreciated.

    Thanks
     
  2. AaronT

    AaronT Member

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  3. nilocg

    nilocg Prolific Poster

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  4. Knocker

    Knocker Lifetime Charter Member
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    Hi, its quiet easy:
    you can use ISO-6059 formula to convert concentration of Ca an Mg to GH. it will be:
    GH (mmol/l) = C (Ca)/40+ C (Mg)/24.3, where C(Ca) and C(Mg) are concentration of mentioned elements in mg/l (ppm)

    Then if you want to convert your received result to most common unit German general hardness (DH), you must multiply calculated result by 5,61.
    So here you go 30,24/40*5,61=4,24 GH (DH)
     
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