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Thread: Need help with getting the correct amount of ppms for my plants.

  1. #11

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    Does anyone know what scale the essentials ec pen works on. My old one ran the 500 scale.

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    GEORGE (06-07-20), Krofam (10-07-20), Mac (06-07-20)

  3. #12

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    Quote Originally Posted by Uv123_4 View Post
    Does anyone know what scale the essentials ec pen works on. My old one ran the 500 scale.
    EC is universal, its PPM CF and TDS that need conversion. If ya meter says 1.1 its 1.1. You can then look that up on the chart above to convert it

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  5. #13

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    Quote Originally Posted by Krofam View Post


    ppm 500 = usa and ppm 700 = uk

    That covers just two of the many ways PPM is measured, that's why it's less trouble to use EC
    It's Not What You Know, It's What You Can Prove

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