Controllers & Testing

  • Nitrite Low Range Colorimeter HI707 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
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  • Red Sea Phosphate Pro (PO4) test kit

    42 Reward Points
    $42.99
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  • Silica Low Range Colorimeter HI705 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Alkalinity Colorimeter HI775 Hanna Checker HC - Fresh Water

    49 Reward Points
    $49.99
    Please wait...
  • Refractometer for Reading Salinity with Calibration Fluid

    39 Reward Points
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  • Free Chlorine Colorimeter HI701 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
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  • Elos Magnesium Aqua Test Kit

    25 Reward Points
    $25.99
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  • Total Chlorine Ultra Low Range Colorimeter HI761 Hanna Checker HC - Fresh Water

    52 Reward Points
    $52.99
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  • Elos Nitrite Aqua Test Kit Quick look

    Elos Nitrite Aqua Test Kit

    17 Reward Points

    reg. $20.99

    Special Price: $17.84

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  • Nitrite High Range Colorimeter HI708 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
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  • Elos Nitrate Aqua Test Kit

    26 Reward Points
    $26.99
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  • Elos Ammonia Aqua Test Kit

    20 Reward Points
    $20.99
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  • Ammonia Medium Range Colorimeter HI715 Hanna Checker HC - Fresh Water

    49 Reward Points
    $49.99
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  • Bromine Colorimeter HI716 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
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  • Elos Phosphate Aqua Test Kit

    27 Reward Points
    $27.99
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  • Total Chlorine Ultra High Range Colorimeter HI771 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Elos pH Marine Aqua Test Kit

    14 Reward Points
    $14.99
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  • Nitrite Ultra Low Range Colorimeter HI764 Hanna Checker HC - Marine Water

    49 Reward Points
    $49.99
    Please wait...
  • Elos KH (Alkalinity) Aqua Test Kit

    17 Reward Points
    $17.99
    Please wait...
  • Chromium VI Low Range Colorimeter HI749 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Phosphorus Ultra Low Range Colorimeter HI736 Hanna Checker HC - Marine Water

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

    49 Reward Points
    $49.99
    Please wait...
  • Color of Water Colorimeter HI727 Hanna Checker HC - Fresh & Marine Water

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

    48 Reward Points
    $48.99

    Out of stock

  • Iron Colorimeter HI721 Hanna Checker HC - Fresh water

    52 Reward Points
    $52.99
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  • Phosphate High Range Colorimeter HI717 Hanna Checker HC - Fresh & Marine Water

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

    49 Reward Points
    $49.99

    Out of stock

  • ReefKeeper RD1 Remote Display 1 - Digital Aquatics

    69 Reward Points
    $69.99
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  • ReefKeeper APC Advanced Pump Controller - Digital Aquatics

    129 Reward Points
    $129.99
    Please wait...
  • ReefKeeper AP1 Advanced Probe 1 - Digital Aquatics

    79 Reward Points
    $79.99
    Please wait...
  • ORP Probe - Neptune Systems

    Starting at: $69.99

  • pH Probe - Neptune Systems

    Starting at: $44.99