Controllers & Testing

  • Bromine Colorimeter HI716 Hanna Checker HC - Fresh Water Quick look

    Bromine Colorimeter HI716 Hanna Checker HC - Fresh Water

    41 Reward Points

    reg. $48.99

    Special Price: $41.64

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  • Total Chlorine Ultra High Range Colorimeter HI771 Hanna Checker HC - Fresh Water Quick look

    Total Chlorine Ultra High Range Colorimeter HI771 Hanna Checker HC - Fresh Water

    41 Reward Points

    reg. $48.99

    Special Price: $41.64

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  • Chromium VI Low Range Colorimeter HI749 Hanna Checker HC - Fresh Water Quick look

    Chromium VI Low Range Colorimeter HI749 Hanna Checker HC - Fresh Water

    41 Reward Points

    reg. $48.99

    Special Price: $41.64

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  • Color of Water Colorimeter HI727 Hanna Checker HC - Fresh & Marine Water Quick look

    Color of Water Colorimeter HI727 Hanna Checker HC - Fresh & Marine Water

    41 Reward Points

    reg. $48.99

    Special Price: $41.64

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  • Iodine Colorimeter HI718 Hanna Checker HC - Fresh Water Quick look

    Iodine Colorimeter HI718 Hanna Checker HC - Fresh Water

    41 Reward Points

    reg. $48.99

    Special Price: $41.64

    Out of stock

  • Total Chlorine Colorimeter HI711 Hanna Checker HC - Fresh Water Quick look

    Total Chlorine Colorimeter HI711 Hanna Checker HC - Fresh Water

    42 Reward Points

    reg. $49.99

    Special Price: $42.49

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  • Ammonia Medium Range Colorimeter HI715 Hanna Checker HC - Fresh Water Quick look

    Ammonia Medium Range Colorimeter HI715 Hanna Checker HC - Fresh Water

    42 Reward Points

    reg. $49.99

    Special Price: $42.49

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  • Ammonia High Range Colorimeter HI733 Hanna Checker HC - Fresh Water Quick look

    Ammonia High Range Colorimeter HI733 Hanna Checker HC - Fresh Water

    42 Reward Points

    reg. $49.99

    Special Price: $42.49

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  • Hanna Checker Ammonia Low Range Checker for Fresh Water Quick look

    Ammonia Low Range Colorimeter HI700 Hanna Checker HC - Fresh Water

    42 Reward Points

    reg. $49.99

    Special Price: $42.49

    Out of stock

  • Red Sea Iodine Pro (I2) test kit

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

    42 Reward Points
    $42.99
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  • Red Sea Phosphate Pro (PO4) test kit

    42 Reward Points
    $42.99
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  • Carbon Dioxide Test Kit - LaMotte

    43 Reward Points
    $43.99
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  • Calcium Hardness Test Kit - LaMotte

    44 Reward Points
    $44.99
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  • PINPOINT pH Replacement Probe

    44 Reward Points
    Please wait...
  • pH Probe - Neptune Systems

    Starting at: $44.99

  • Total Chlorine Ultra Low Range Colorimeter HI761 Hanna Checker HC - Fresh Water Quick look

    Total Chlorine Ultra Low Range Colorimeter HI761 Hanna Checker HC - Fresh Water

    45 Reward Points

    reg. $52.99

    Special Price: $45.04

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  • Iron Colorimeter HI721 Hanna Checker HC - Fresh water Quick look

    Iron Colorimeter HI721 Hanna Checker HC - Fresh water

    45 Reward Points

    reg. $52.99

    Special Price: $45.04

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  • Phosphate Low Range Colorimeter HI713 Hanna Checker HC - Fresh & Marine Water

    49 Reward Points
    $49.99
    Please wait...
  • Alkalinity Colorimeter HI755 Hanna Checker HC - Marine Water

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

    49 Reward Points
    $49.99
    Please wait...
  • Alkalinity Colorimeter HI775 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...
  • Phosphorus Ultra Low Range Colorimeter HI736 Hanna Checker HC - Marine Water

    49 Reward Points
    $49.99
    Please wait...
  • Phosphate High Range Colorimeter HI717 Hanna Checker HC - Fresh & Marine Water

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

    49 Reward Points
    $49.99

    Out of stock

  • Red Sea Potassium Pro (K) Test Kit

    52 Reward Points
    $52.99
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  • Red Sea Marine Care Test Kit

    56 Reward Points
    $56.99
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  • Red Sea Reef Foundation Pro Multi Test Kit (Ca, Alk, Mg)

    59 Reward Points
    $59.99
    Please wait...
  • BRS Lab Grade pH Probe

    59 Reward Points
    Please wait...
  • ReefKeeper DCI DC Pump Interface - Digital Aquatics

    59 Reward Points
    $59.99
    Please wait...
  • Red Sea Algae Control Multi Test Kit (NO3/PO4)

    59 Reward Points
    $59.99
    Please wait...