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Do these parameters sound alright?

Discussion in 'CO2 Enrichment' started by ccLansman, Jan 19, 2009.

  1. ccLansman

    ccLansman Guru Class Expert

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    Just used a test strip and here are my readings. How do i switch ppm kh and gh to the degree number.

    Specs:::

    No3 = 40ppm
    GH = 300ppm
    KH = 200ppm
    ph = 6.8

    High, low?

    Thanks
     
  2. JDowns

    JDowns Lifetime Charter Member
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    1 german degree is 17.9 ppm
    1 american degree is 17.1 ppm

    So divide your ppm by the appropriate conversion to get the degree.
     
  3. VaughnH

    VaughnH Lifetime Charter Member
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    GH and KH are not at all critical, so I just divide ppm by 20 to get a rough estimate of degrees of hardness. I can easily do that in my head. You have hard water.
     
  4. ccLansman

    ccLansman Guru Class Expert

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    i see that, its much higher then i antisipated. Should i do any sort of softening with RO?
     
  5. VaughnH

    VaughnH Lifetime Charter Member
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    I doubt that your KH is that high, which makes me doubt that your GH is that high either. If your KH was that high I would expect your pH to be higher. I suspect the problem is using test strips to measure those values. Test strips are very crude estimates, not measurements. It is hard enough to trust a test kit measurement of KH, pH and GH, without calibrating the kits, but using test strips is basically just guessing.
     
  6. ccLansman

    ccLansman Guru Class Expert

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    lol great, thanks for bursting my bubble VaughnH, i guess im out, i paid 20 bucks for a box of these damn test kits :)... o well they should be ok for nitrate and ph ..
     
  7. SuperColey1

    SuperColey1 Guru Class Expert

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    They'll be reasonable for Ph, not so good for nitrate!!!

    AC
     
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