EC or TDS

Discussion in 'Hydroponic Cultivation' started by 1bossman, Sep 30, 2003.

  1. 1bossman

    1bossman Veggy Stage

    Which method do you go by? I have been reading a little on this and it seems to me that going by the EC reading to adjust your ferts. is a bit easyer.
     
    1bossman, Sep 30, 2003
    #1
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  2. Useless

    Useless Diogenes Reincarnate

    They are essentially the same, only different...:ponder:


    EC = Electro-Conductivity; These are the measurement units of a salts ability to conduct electric current in a soluable form.


    TDS = Total Disolved Solids; the actual amount of disolved salts in the solution.


    Now, you can easily convert from EC to TDS and vice versa.


    Use this formula:


    FOr any EC reading between 0.0 - 0.9, multiply by 680 to determine TDS


    FOr any EC reading 1.0 or above, multiply by 700 to determine TDS


    EX.- EC=1.2; therefore 1.2 x 700 = 840 TDS!


    TO go backwards, just divide.


    If you have a TDS meter that reads 1250, then;


    1250/700 = 1.785 EC.


    Its that easy.


    They tell you the same thing, just in different measurement units.
     
    Useless, Sep 30, 2003
    #2

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