This site is supported by the advertisements on it, please disable your AdBlocker so we can continue to provide you with the quality content you expect.
  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/
    Dismiss Notice

GH help wanted.

Discussion in 'Advanced Strategies and Fertilization' started by aqualung, Jan 28, 2005.

  1. aqualung

    aqualung Junior Poster

    Joined:
    Jan 24, 2005
    Messages:
    11
    Likes Received:
    0
    Local Time:
    10:59 PM
    Test kit reads GH of 6 (107 ppm)

    Professional lab reports:

    Calcium 36 mg/L
    Magnesium 9 mg/L
    Sodium 34 mg/L

    When I add these up (include Sodium??) I get 79 mg/L

    Something does not add up. Anyone, please share your thoughts. :confused:
     
  2. m lemay

    m lemay Prolific Poster

    Joined:
    Jan 23, 2005
    Messages:
    60
    Likes Received:
    0
    Local Time:
    10:59 PM
    Re: GH help wanted.

    Theres a lot of potential variables here. Is the lab report from the exact same water sample from the same time? If not, your comparing apples and oranges.
     
  3. aqualung

    aqualung Junior Poster

    Joined:
    Jan 24, 2005
    Messages:
    11
    Likes Received:
    0
    Local Time:
    10:59 PM
    Re: GH help wanted.

    No, the lab report was from water I drew from the well towards the end of December, and I did not test that sample myself.

    You mentioned other variables. Can you or anyone else think of a few other ones?
     
  4. baruch mor

    baruch mor Prolific Poster

    Joined:
    Jan 23, 2005
    Messages:
    30
    Likes Received:
    0
    Local Time:
    10:59 PM
    Re: GH help wanted.

    i would guess that the "aquarium" test kit is not accurate as the lab test. its about 25% difference - u should take into consideration that u can always get 5% error from each test kit , specially "aquarium" test kits ...
     
  5. aqualung

    aqualung Junior Poster

    Joined:
    Jan 24, 2005
    Messages:
    11
    Likes Received:
    0
    Local Time:
    10:59 PM
    Re: GH help wanted.

    I just found what I wanted on The Krib:

    1dGH = 7.143 ppm Ca2+ ....so....

    36 mg/L Calcium ÷ 7.143 = 5dH

    So my hobby-grade test kit turned green after 6 drops, that's close enough. All is right with the world.
     
Loading...

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice