Controllers & Testing

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

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

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

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

    49 Reward Points
    $49.99

    Out of stock

  • Phosphorus High Range Colorimeter HI706 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
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  • Nitrite Low Range Colorimeter HI707 Hanna Checker HC - Fresh Water

    48 Reward Points
    $48.99
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  • Silica Low Range Colorimeter HI705 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
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  • Nitrite High Range Colorimeter HI708 Hanna Checker HC - Fresh Water

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

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

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

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

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

    48 Reward Points
    $48.99
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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
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  • pH Probe - Neptune Systems

    Starting at: $44.99

  • Carbon Dioxide Test Kit - LaMotte

    43 Reward Points
    $43.99
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  • 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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  • Salifert Strontium Aquarium Test Kit

    40 Reward Points
    $40.99
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  • Heater Calibration Thermometer

    39 Reward Points
    $39.99
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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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  • Magnetic Probe Rack - Neptune Systems

    39 Reward Points
    $39.95
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  • Salifert Iodine Aquarium Test Kit

    38 Reward Points
    $38.99
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  • ReefKeeper HUB Bus Hub - Digital Aquatics

    37 Reward Points
    $37.99
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  • Alkalinity Test Kit - LaMotte

    35 Reward Points
    $35.99
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  • Red Sea Calcium Pro Test Kit

    34 Reward Points
    $34.99
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  • Red Sea Alkalinity Pro Test Kit

    34 Reward Points
    $34.99
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  • Red Sea Magnesium Pro Test Kit

    34 Reward Points
    $34.99
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  • Big Digital Temp Alert - Lifegard

    34 Reward Points
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  • Hanna Test Kit HI3824 - Ammonia for Fresh Water

    31 Reward Points
    $31.99
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  • Vertex Sensor-Mag XD Probe Holder

    31 Reward Points
    $31.99
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  • Vertex Sensor-Mag Probe Holder

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

    Starting at: $29.99

  • Elos Ammonia 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
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  • Low-Profile Advanced Leak Detection Probe - Neptune Systems

    29 Reward Points
    $29.99
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  • Temperature Probe - Neptune Systems

    29 Reward Points
    $29.99
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  • Hanna Cuvette Caps HI731225 (4 Piece)

    27 Reward Points
    $27.99
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  • Elos Magnesium Aqua Test Kit

    27 Reward Points
    $27.99
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  • Elos Nitrate Aqua Test Kit

    27 Reward Points
    $27.99
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  • Elos Phosphate Aqua Test Kit

    27 Reward Points
    $27.99
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  • Red Sea Potassium Pro Reagent Refill Kit

    26 Reward Points
    $26.99
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  • HI705-25 Silica LR Reagents for HI 705 - Fresh water

    26 Reward Points
    $26.99
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  • Hanna Cuvette Cleaning Solution HI93703-50 230 mL

    26 Reward Points
    $26.99
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  • Salifert Magnesium Aquarium Test Kit

    26 Reward Points
    $26.99
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  • Salifert Phosphate Aquarium Test Kit

    26 Reward Points
    $26.99
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  • Fauna Marin Multi Reference Solution

    25 Reward Points
    $25.99
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  • Elos Calcium Aqua Test Kit Quick look

    Elos Calcium Aqua Test Kit

    25 Reward Points

    reg. $29.99

    Special Price: $25.49

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  • Phosphate REEFER Test Kit - NYOS

    24 Reward Points
    $24.99

    Out of stock

  • Nitrate REEFER Test Kit - NYOS

    24 Reward Points
    $24.99
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  • Milwaukee pH600 pH Meter Pen

    24 Reward Points
    $24.99
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  • Temp Probe (For Elite) - Digital Aquatics

    24 Reward Points
    $24.99
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  • Temp Probe (for Lite) - Digital Aquatics

    24 Reward Points
    $24.99
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  • Salifert Nitrate Aquarium Test Kit

    24 Reward Points
    $24.99
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  • HI733-25 Ammonia HR Reagents - Fresh Water

    23 Reward Points
    $23.99
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  • Salifert Calcium Aquarium Test Kit

    23 Reward Points
    $23.99
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  • Red Sea Phosphate Pro Reagent Refill Kit

    22 Reward Points
    $22.99
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  • HI758-25 Calcium Checker Reagents - Marine Water

    22 Reward Points
    $22.99
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  • Milwaukee Protective Hardshell Case for Refractometer

    22 Reward Points
    $22.99
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  • Milwaukee pH Calibration Fluid - Box of 25 Single Use Packets

    Starting at: $22.99