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Monitors, Testing & Controllers

Test Kits
Test Kits
Neptune Systems - Apex
Neptune Systems - Apex
Digital Aquatics ReefKeeper
Digital Aquatics ReefKeeper
Milwaukee
Milwaukee
Pinpoint
Pinpoint
Hydrometers & Refractometers
Hydrometers & Refractometers
Hanna Checker Colorimeters
Hanna Checker Colorimeters
Timers & Thermometers
Timers & Thermometers
Probes & Accessories
Probes & Accessories
32 / 64
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  • Nitrite Ultra Low Range Colorimeter HI764 Hanna Checker HC - Marine Water

    48 Reward Points
    $48.99

    Out of stock

  • 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

    48 Reward Points
    $48.99
    Please wait...
  • Ammonia High Range Colorimeter HI733 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...
  • Iodine Colorimeter HI718 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • Iron Colorimeter HI721 Hanna Checker HC - Fresh water

    48 Reward Points
    $48.99
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  • Phosphate High Range Colorimeter HI717 Hanna Checker HC - Fresh & Marine Water

    48 Reward Points
    $48.99
    Please wait...
  • Ammonia Low Range Colorimeter HI700 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
    Please wait...
  • pH Probe - Neptune Systems

    Starting at: $44.99

  • PINPOINT pH Replacement Probe

    44 Reward Points

    Out of stock

  • Refractometer for Reading Salinity with Calibration Fluid

    39 Reward Points
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  • Neptune Systems I/O Breakout Box

    39 Reward Points
    $39.99
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  • Milwaukee MA955 CO2 Solenoid Valve

    39 Reward Points
    Please wait...
  • ReefKeeper HUB Bus Hub - Digital Aquatics

    37 Reward Points
    $37.99
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  • Red Sea Phosphate Pro (PO4) test kit

    34 Reward Points
    $34.99
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  • Vertex Sensor-Mag XD Probe Holder

    31 Reward Points
    $31.99
    Please wait...
  • Red Sea Calcium Pro Test Kit

    29 Reward Points
    $29.99
    Please wait...
  • Red Sea Magnesium Pro Test Kit

    29 Reward Points
    $29.99
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  • Elos Ammonia Aqua Test Kit

    29 Reward Points
    $29.99
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  • Elos Calcium Aqua Test Kit

    29 Reward Points
    $29.99
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  • Solid Surface Advanced Leak Detection Probe - Neptune Systems

    29 Reward Points
    $29.99
    Please wait...
  • Low-Profile Advanced Leak Detection Probe - Neptune Systems

    29 Reward Points
    $29.99
    Please wait...
  • Lunar Simulator Module: LSM & Lunar LED String - Neptune Systems

    Starting at: $29.99

  • Temperature Probe - Neptune Systems

    29 Reward Points
    $29.99
    Please wait...
  • Vertex Sensor-Mag Probe Holder

    29 Reward Points
    $29.99
    Please wait...
  • Elos Magnesium Aqua Test Kit

    27 Reward Points
    $27.99

    Out of stock

  • Elos Nitrate Aqua Test Kit

    27 Reward Points
    $27.99
    Please wait...
  • Elos Phosphate Aqua Test Kit

    27 Reward Points
    $27.99
    Please wait...
  • Red Sea Alkalinity Pro Test Kit

    24 Reward Points
    $24.99
    Please wait...
  • Elos Nitrite Aqua Test Kit

    24 Reward Points
    $24.99
    Please wait...
  • Milwaukee pH600 pH Meter Pen

    24 Reward Points
    Please wait...
32 / 64
High / Low