My little pH project

Discussion in 'General Discussions' started by solex69, Feb 1, 2009.

  1. solex69

    solex69

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    Ola guys

    So yah, I've now decided to embark on a little project to see how low I can get our water in Cape Town to drop to. I would like to see if the process below will help us all in getting water parameters inline for breeding tetras, discus, etc etc.


    For the 1st phase, I've filled a little cube with normal tap water and chucked a decent amount of Peatgro Pure Organic Peat on the water surface. This will remain as is for a period of 2 weeks so that all the peat would've sunk by then and formed the substrate in the cube. A pH reading will then be done and updated here.

    Once phase 1 is completed, I will be placing a piece of dry indian almond leaf in the water and let it stand for about a week...maybe two. Another pH reading will be done then and updated here.

    For phase 3, I'll add a teabag to the cube for about one week. A final pH reading will be done then and updated here.

    Henk - Would you recommend I use an airstone from phase 2 onwards?

    Here are some pics of the 1st phase

    [​IMG]


    [​IMG]


    [​IMG]


    Cheers for now
    Dale
     
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  3. Henk Hugo

    Henk Hugo

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    How low do you want to take that PH? test it every 2nd day.... might drop VERY quickly
     
  4. OP
    solex69

    solex69

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    Going as low as what I can get it.
    Will try to test tomorrow
     
  5. Henk Hugo

    Henk Hugo

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    so you want to drop it to say 3?
     
  6. OP
    solex69

    solex69

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    Then it'll be as if they are in the Rio Negro itself! :)

    I'll aim for 3.0 - 3.5....that an ideal benchmark.
     
  7. Henk Hugo

    Henk Hugo

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    mmmmmmmmm.... ok as long as it is wild fish then its not a problem....
     
  8. Singularity

    Singularity

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    Would be interesting to see a daily update on ph drops etc to see where it stabilizes in each phase, if that makes any sense :D
     
  9. Singularity

    Singularity

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    Ps. with what are you testing ?
     
  10. OP
    solex69

    solex69

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    Going to borrow an electronic pH meter. Will also do test with the normal test strips from LFS and see what the differences are
     
  11. Singularity

    Singularity

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    Tetra strips ? i believe they only go down to a ph of 6.4 and not very accurate for the price, i still use them though but mainly for a quick NO3 check. Ph pens are relatively cheap, about R300-400 for a saga. pm and i can give you a link to where i got mine, only downside is the calibration
     
  12. Henk Hugo

    Henk Hugo

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    PH pens DO NOT work in soft water. they need conductivity in the water to be accurate. you need a science grade PH meter to get an acurate reading in soft water
     
  13. Singularity

    Singularity

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    doesnt it work at all ? do you get false readings ? i only tested it once on distilled water and got a reading of 7 the same reading we got at the uni lab, isnt distilled water also soft ?
     
  14. Henk Hugo

    Henk Hugo

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    you get false readings.... or thats what the Prof explained
     
  15. Singularity

    Singularity

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    I get a sample tested once in a while just for ph at the uni, next time i will take some pure RO along and test it at the same time, maybe the distilled water was just a fluke, but will make sure :) The test strips arent very reliable, but i know by now what they look like when everything is normal, i test further if there is something of, if that makes sense :D
     
  16. OP
    solex69

    solex69

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    I'll try and contact another friend of mine who has a proper scientific pH meter...will save me the trip to the Prof each week
     
  17. Singularity

    Singularity

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    ok been doing some quick reading and it seems that you would need a tds of atleast 160ppm for a reliable reading from a ph pen, does that seem right to you henk. they actually say 100microSiemens/cm but that is roughly 160ppm....
     
  18. Henk Hugo

    Henk Hugo

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    yea sounds about right....
     
  19. Singularity

    Singularity

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    ok and would i be right in saying that will be 3.3d GH minimum required ?
     
  20. Henk Hugo

    Henk Hugo

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    no idea - i will go do some research when i have a moment
     
  21. Singularity

    Singularity

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    please do, if that is the case it should be fine on my tank water
     

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