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  1. #1
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    Apr 2013
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    Correlation list between pH and other parameters?

    Can we, or has anyone, made a good list of how pH correlates with other parameters?

    Like hardness, temp, ammonias, nitrites, nitrates, salinity, EC, TDS, TDG, oxygen, co2, the specific macro and micro nutrients for aquaponics (Nitrogen, Potassium, Phosphorus, Calcium, magnesium, sulfur, iron, boron, zinc, molybdenum, etc...)

    I guess we should first list things which people use to adjust pH, if you can add to that...

    Raises pH - Lime, potassium bicarbonate... ?
    Lowers pH - Phosphoric acid, hydrochloric acid... ?

    Anyhow, I'll start with temperature...

    Temperature up, pH down.
    Temperature down, pH up.

    More specifically, pure water has a pH of 7, only at 25C (77F).
    At 60C (140F), it will have a pH of 6.96, nothing a pH test strip can detect, although, I imagine this factor could change, in not so pure water, creating larger variances.

    So apparently, and do correct me if I'm wrong, but a 0.818% increase in temperature, lowered the pH by 0.005%, does that mean that a 45% drop in temperature raises the pH by 0.005% too? Wow, that was a weird thought. Anyhow, what more could you add? Would you like to do another parameter, like ammonia? Hey, aren't there a couple main types of ammonia? Yes, come to think of it, which is dominate may correlate with oxygen levels, but I forget.

  2. #2
    Moderator JCO's Avatar
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    Re: Correlation list between pH and other parameters?

    Check out this link and READ, READ...Learn Learn http://diyaquaponics.com/forum/viewforum.php?f=112 See how it magically appeared
    JCO
    Irish eyes are always smiling but
    • "In the eyes of the world, you are only as good as your last success"
    so never forget
    • "MAN IS ONLY LIMITED BY HIS IMAGINATION"

  3. #3
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    Nov 2012
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    Re: Correlation list between pH and other parameters?

    Quote Originally Posted by JCO
    Check out this link and READ, READ...Learn Learn

    What link???

    LOL ok i see the magic edit

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