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  1. #1
    Senior Member LadyP's Avatar
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    GH and KH test question...

    Hi,


    I'm getting 14 for the KH, what is normal (that's what i eard)
    but I am getting no result for the GH...even I add 30 drops!...water always stay orange/yellow (should turn green)

    Anyone have idea why i'm getting that kind of result?

  2. #2
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    Last month, we had a thread talking about using GH to estimate magnesium levesl (http://aquariacanada.com/forums/show...&threadid=4401) I posted a couple of references about GH. In general, GH is very high in salt water and not very useful.

    GH is basically Calcium and Magnesium (around 1,600). Freshwater GH kits won't register because the value is much higher than they are designed to handle.

    Your value of 14 for dKH sounds a bit high. The target is between 7 and 12.6. 14 isn't bad.
    Nick

  3. #3
    Senior Member LadyP's Avatar
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    I first use tap water when i filled my tank..

    since I'm curing my LR and use R/O D/I water to change
    waters, i guess it will go down a bit...

    Thank you for the great links...it explains very well what I want to know...

  4. #4
    NFR Mod Azonic's Avatar
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    Originally posted by nickb
    Your value of 14 for dKH sounds a bit high. The target is between 7 and 12.6. 14 isn't bad.
    nick: I think you misread her post. You are thinking of dKH being between 7 and 12.6.

    She posted a KH reading of 14 which you multiply by 10 = 140....then you divide 140 by 17.85 to get your dKH of 7.84...which is actually on the low side of the scale.


    LadyP: what brand test kit do you use?
    Visit my Reef @ NewfieReef.com

  5. #5
    Senior Member LadyP's Avatar
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    it says Aquarium Pharmaceuticals Inc
    on the box...(green box)

    The petshop guy told me it works for salt water even
    it's test for freshwater...

  6. #6
    NFR Mod Azonic's Avatar
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    That kit should be fine. I'd say your alk is a little low but nothing to freak out about.
    Visit my Reef @ NewfieReef.com

  7. #7
    Senior Member LadyP's Avatar
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    The KH test conversion charts on the test says:

    # drops = dKH = ppm KH

    so I guess

    I had 14 drops = 14 dKH and + about 250.6 ppm

    I made the mistake saying KH of 14...I should said dKH

  8. #8
    Senior Member LadyP's Avatar
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    on way or the other...i'm not where it should be

  9. #9
    Senior Member LadyP's Avatar
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    and it's not "she" but 'he'...sorry for the nickname confusion

  10. #10
    NFR Mod Azonic's Avatar
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    250.6ppm is 14 dKH, so that makes sense the way you posted it....14dKH is a little on the high side as was already said :P
    Visit my Reef @ NewfieReef.com

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