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  1. D

    NO3 vs NO-3 Nitrate Test

    Thank you for looking into it and the reply! And yes that AP kit does indicate a higher level of nitrate. I might pick up a Salifert kit to see what I get with it.... and/or take a water sample to the LFS to see what they get. I've been using the AP kit and have had readings as high as 40...
  2. D

    NO3 vs NO-3 Nitrate Test

    The Red Sea kit has the following note: It is not always clear whether a Nitrate test measures the NO3 Ions or the NO-3 Nitrogen (NO3-N) This test gives you the amount of NO3 Ions in ppm.
  3. D

    NO3 vs NO-3 Nitrate Test

    Steve, The NO3 is a Red Sea test kit and the NO-3 is a Saltwater Master kit.
  4. D

    NO3 vs NO-3 Nitrate Test

    I have two nitrate test kits... one indicates it test for NO3 which I get a reading of somewhere between 0 - 2.5 ppm, the other test indicates it's for NO-3 (high dash) which I get a reading of 20 ppm. Can someone explain the difference between these test? And which test one do I want to test...
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