ALK drop after water change

Discussion in 'Water Parameters and Additives' started by charlv, 13 Oct 2011.

  1. charlv

    charlv

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    Hi Guys

    I wonder if someone have the same problem I change salt brand and everything droped MAG, ALK, and CAL so now i dose my but off to get everything stable again

    Water Par now

    ph - 8.3
    kh - 7.3 after dosing ALK 8.3 raised from 6.2
    MAG - 1200 battle to get that up
    Cal - 400

    I don't know if I can name the brand
    And yes I know you need to check fresh salt water mix

    So question wat do i dose first MAG to get it to the right level. Because i can't get it above 1200 at the moment.
    Or something else.

    Thanks Charl
     
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  3. Nemos Janitor

    Nemos Janitor

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    Has your salinity dropped?
     
  4. charlv

    charlv Thread Starter

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    Hi NJ
    No salinity on 1.025
     
  5. Nemos Janitor

    Nemos Janitor

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    Bud a technical point. Salinity is measured in PPT so we are looking for about 35.5ppt.

    Specific gravity is the measurement you give. They are similar, but Specific gravity is temperature dependent and Salinity not. This means that the salinity could be anything.

    SG should always be quoted with a relevant temp.
    We will assume that the SG you quote is at 25c.

    Bud are you using a refractometer or hydrometer to test the SG?

    Please bare with me for these seemingly silly questions, we need to ascertain that the salinity is correct first before attempting to adjust the other parameters.

    I don't see an issue with naming the brand you changed to and from. Would give a better understanding.
     
    Last edited: 13 Oct 2011
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