Controllers & Testing

  • Phosphate High Range Colorimeter HI717 Hanna Checker HC - Fresh & Marine Water

    49 Reward Points
    $49.99
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  • Korallen-Zucht Potassium Test Kit

    49 Reward Points
    $49.99
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  • Alkalinity Colorimeter HI775 Hanna Checker HC - Fresh Water

    49 Reward Points
    $49.99
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  • ReefKeeper Expansion Socket - Digital Aquatics

    49 Reward Points
    $49.99
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  • Calcium Colorimeter HI758 Hanna Checker HC - Marine Water

    49 Reward Points
    $49.99
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  • Ammonia High Range Colorimeter HI733 Hanna Checker HC - Fresh Water

    49 Reward Points
    $49.99
    Please wait...
  • Ammonia Low Range Colorimeter HI700 Hanna Checker HC - Fresh Water

    49 Reward Points
    $49.99
    Please wait...
  • Phosphate Low Range Colorimeter HI713 Hanna Checker HC - Fresh & Marine Water

    49 Reward Points
    $49.99
    Please wait...
  • Ammonia Medium Range Colorimeter HI715 Hanna Checker HC - Fresh Water

    49 Reward Points
    $49.99
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  • Total Chlorine Colorimeter HI711 Hanna Checker HC - Fresh Water

    49 Reward Points
    $49.99
    Please wait...
  • Nitrite Ultra Low Range Colorimeter HI764 Hanna Checker HC - Marine Water

    49 Reward Points
    $49.99
    Please wait...
  • Nitrite Low Range Colorimeter HI707 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
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  • Free Chlorine Colorimeter HI701 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Phosphorus High Range Colorimeter HI706 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Total Chlorine Ultra High Range Colorimeter HI771 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Bromine Colorimeter HI716 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Iodine Colorimeter HI718 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Nitrite High Range Colorimeter HI708 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Chromium VI Low Range Colorimeter HI749 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Silica Low Range Colorimeter HI705 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Color of Water Colorimeter HI727 Hanna Checker HC - Fresh & Marine Water

    48 Reward Points
    $48.99
    Please wait...
  • PINPOINT pH Replacement Probe

    44 Reward Points
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  • pH Probe - Neptune Systems

    Starting at: $44.99

  • Calcium Hardness Test Kit - LaMotte

    44 Reward Points
    $44.99
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  • Carbon Dioxide Test Kit - LaMotte

    43 Reward Points
    $43.99
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  • Red Sea Phosphate Pro (PO4) test kit

    42 Reward Points
    $42.99
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  • Red Sea Nitrate Pro (NO3) Test Kit

    42 Reward Points
    $42.99
    Please wait...
  • Red Sea Iodine Pro (I2) test kit

    42 Reward Points
    $42.99
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  • Salifert Strontium Aquarium Test Kit

    40 Reward Points
    $40.99
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  • Neptune Systems I/O Breakout Box

    39 Reward Points
    $39.99
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  • Refractometer for Reading Salinity with Calibration Fluid

    39 Reward Points
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  • Heater Calibration Thermometer

    39 Reward Points
    $39.99
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