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. Dismiss Notice
  2. 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 and KH

Discussion in 'Are you new to aquatic plants? Start here' started by Guppypuppy, May 13, 2008.

  1. Guppypuppy

    Guppypuppy Junior Poster

    Joined:
    May 5, 2008
    Messages:
    8
    Likes Received:
    0
    Local Time:
    4:17 AM
    I bought a GH and KH test kit today. It is the API test kit. I put one drop in at a time and neither solution changed colors after 12 drops. I know I have really hard water but should I have seen some kind of change? I did the test on just tap water.
     
  2. VaughnH

    VaughnH Lifetime Charter Member
    Lifetime Member

    Joined:
    Jan 24, 2005
    Messages:
    3,011
    Likes Received:
    89
    Local Time:
    4:17 AM
    My API GH test kit stopped working after about 18 months, so it could be that you just have a bad kit. My KH kit still works, or it did a few weeks ago when I last used it. The first drop of reagent should give you one color, and the next drops eventually change that to another color. As you add drops the first color usually gets a bit more easy to see, before it changes. Did yours act anything like that?
     
  3. Guppypuppy

    Guppypuppy Junior Poster

    Joined:
    May 5, 2008
    Messages:
    8
    Likes Received:
    0
    Local Time:
    4:17 AM
    I got the one color but it never changed colors. I think if I had kept adding drops it would have eventually changed I guess I should have kept adding drops
     
  4. VaughnH

    VaughnH Lifetime Charter Member
    Lifetime Member

    Joined:
    Jan 24, 2005
    Messages:
    3,011
    Likes Received:
    89
    Local Time:
    4:17 AM
    You probably just have high GH and KH. When my GH kit quit, I didn't get much of any color with the first drop, and it never did intensify with additional drops, nor did it ever change color. A new kit worked as advertised.
     
  5. Guppypuppy

    Guppypuppy Junior Poster

    Joined:
    May 5, 2008
    Messages:
    8
    Likes Received:
    0
    Local Time:
    4:17 AM
    Okay thanks. I wonder if my local utility would do the test using their equipment if I took a sample in. LoL Guess I will call and see.
     
  6. Carissa

    Carissa Guru Class Expert

    Joined:
    Jun 8, 2007
    Messages:
    678
    Likes Received:
    0
    Local Time:
    4:17 AM
    Make sure that you are looking for the right color change. Since my tap water is so soft, it never changes either; because the first drop brings it right to the second color. 0GH and 0KH. A trick to remember which is which: The second color will be similar to the color of the drop before it actually hits the water.
     
  7. Guppypuppy

    Guppypuppy Junior Poster

    Joined:
    May 5, 2008
    Messages:
    8
    Likes Received:
    0
    Local Time:
    4:17 AM
    Yea I am sure I was looking for the right color. I just did the KH test again and it took 17 drops to get it to change color. Just some really hard water. Okay so I understand KH as the amount of Carbonate HCO3. What is the GH then? General Hardness yes I understand that but what is its chemical structure or what is it measuring?
     
  8. Carissa

    Carissa Guru Class Expert

    Joined:
    Jun 8, 2007
    Messages:
    678
    Likes Received:
    0
    Local Time:
    4:17 AM
    Ca and Mg ions.
     

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