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July Sale! Discounts on LED grow lights and more! | VIEW DEALS
July Sale! Discounts on LED grow lights and more! | VIEW DEALS

Meters / Testers / Monitors

  • Original price $49.99 - Original price $49.99
    Original price
    $49.99
    $49.99 - $49.99
    Current price $49.99

    AC Infinity pH Meter Kit | pH Pen Tester for Water

    PH METER KIT, PH PEN TESTER FOR WATER A digital water quality meter designed to measure water’s acidity, alkalinity, and temperature to help optimi...

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    Original price $49.99 - Original price $49.99
    Original price
    $49.99
    $49.99 - $49.99
    Current price $49.99
  • Original price $149.00 - Original price $149.00
    Original price
    $149.00
    $149.00 - $149.00
    Current price $149.00

    AC Infinity pH Meter Pro Kit | All-In-One pH Pen | Interchangeable Probe

    PH METER PRO KIT, INTERCHANGEABLE PROBE Hydroponic pH reader for water quality assessment to help monitor and maintain proper solution levels. Mea...

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    Original price $149.00 - Original price $149.00
    Original price
    $149.00
    $149.00 - $149.00
    Current price $149.00
  • Original price $79.99 - Original price $79.99
    Original price
    $79.99
    $79.99 - $79.99
    Current price $79.99

    AC Infinity pH Meter Pro Kit | Interchangeable Probe

    PH METER PRO KIT, INTERCHANGEABLE PROBE A digital water quality meter designed to measure water’s acidity, alkalinity, and temperature to help opti...

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    Original price $79.99 - Original price $79.99
    Original price
    $79.99
    $79.99 - $79.99
    Current price $79.99
  • Original price $35.99 - Original price $35.99
    Original price
    $35.99
    $35.99 - $35.99
    Current price $35.99

    AC Infinity Replacement Probe for Hydroponic Meter Pro Kit

    REPLACEMENT PROBE FOR HYDROPONIC METER PRO KIT A replacement probe specially made for the AC Infinity Hydroponic Meter PRO to detect pH levels, mea...

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    Original price $35.99 - Original price $35.99
    Original price
    $35.99
    $35.99 - $35.99
    Current price $35.99
  • Original price $17.99 - Original price $17.99
    Original price
    $17.99
    $17.99 - $17.99
    Current price $17.99

    AC Infinity Replacement Probe for pH Meter Pro Kit

    REPLACEMENT PROBE FOR PH METER PRO KIT A replacement probe specially made for the AC Infinity pH Meter PRO to detect pH levels, measuring acidity a...

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    Original price $17.99 - Original price $17.99
    Original price
    $17.99
    $17.99 - $17.99
    Current price $17.99
  • Original price $539.99
    Original price $539.99 - Original price $539.99
    Original price $539.99
    Current price $513.95
    $513.95 - $513.95
    Current price $513.95

    Bluelab pH Controller with Monitoring and Dosing

    Bluelab pH Controller with Monitoring and Dosing Introducing the Bluelab pH Controller, the ultimate hydroponic digital tester designed to maximi...

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    Original price $539.99
    Original price $539.99 - Original price $539.99
    Original price $539.99
    Current price $513.95
    $513.95 - $513.95
    Current price $513.95
  • Original price $99.95 - Original price $99.95
    Original price
    $99.95
    $99.95 - $99.95
    Current price $99.95

    Bluelab pH Pen

    Bluelab pH Meter | Fully Waterproof | Simple Calibration This user-friendly and hardy handheld pen will take measurements in increments of 0.1 pH...

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    Original price $99.95 - Original price $99.95
    Original price
    $99.95
    $99.95 - $99.95
    Current price $99.95
  • Original price $99.95 - Original price $99.95
    Original price
    $99.95
    $99.95 - $99.95
    Current price $99.95

    Bluelab PPM Meter

    Bluelab | PPM Meter | Measures EC+TDS+CF & Temperature Providing quick and accurate readings at the click of a button, you can rest assured t...

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    Original price $99.95 - Original price $99.95
    Original price
    $99.95
    $99.95 - $99.95
    Current price $99.95
  • Original price $248.00 - Original price $248.00
    Original price
    $248.00
    $248.00 - $248.00
    Current price $248.00

    GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester (HI98131)

    HI98131 Waterproof Pocket pH/EC/TDS/Temperature Tester The HI98131 is a slim, lightweight, and waterproof pocket tester that measures pH, conducti...

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    Original price $248.00 - Original price $248.00
    Original price
    $248.00
    $248.00 - $248.00
    Current price $248.00
  • Original price $66.00 - Original price $66.00
    Original price
    $66.00
    $66.00 - $66.00
    Current price $66.00

    GroLine Hydroponics pH Tester (HI98115)

    HI98115 GroLine Hydroponics pH Tester The HI98115 is a GroLine pH tester with advanced features for the measurement of pH in hydroponic nut...

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    Original price $66.00 - Original price $66.00
    Original price
    $66.00
    $66.00 - $66.00
    Current price $66.00
  • Original price $435.00 - Original price $435.00
    Original price
    $435.00
    $435.00 - $435.00
    Current price $435.00

    GroLine Monitor for Hydroponic Nutrients (HI981420)

    HI981420 Hydroponics Monitor The HI981420 GroLine Monitor for Hydroponic Nutrients provides around-the-clock, continuous monitoring of pH, conduc...

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    Original price $435.00 - Original price $435.00
    Original price
    $435.00
    $435.00 - $435.00
    Current price $435.00
  • Original price $556.00 - Original price $556.00
    Original price
    $556.00
    $556.00 - $556.00
    Current price $556.00

    GroLine Monitor for Hydroponic Nutrients with Inline Probe (HI981421)

    HI981421 Monitor for Hydroponic Nutrients with Inline Prober The HI981421 GroLine Monitor for Hydroponic Nutrients provides around-the-clock, con...

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    Original price $556.00 - Original price $556.00
    Original price
    $556.00
    $556.00 - $556.00
    Current price $556.00
  • Original price $451.00 - Original price $741.00
    Original price
    $451.00
    $451.00 - $741.00
    Current price $451.00

    GroLine Nutrient Dosing System (HI981413)

    HI981413 Nutrient Dosing System The HI981413 Nutrient Dosing System is engineered for maintaining the concentration of fertilizer in the nutrient ...

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    Original price $451.00 - Original price $741.00
    Original price
    $451.00
    $451.00 - $741.00
    Current price $451.00
  • Original price $446.00 - Original price $736.00
    Original price
    $446.00
    $446.00 - $736.00
    Current price $446.00

    GroLine pH Dosing System (HI981412)

    HI981412 pH Dosing System Maintaining the correct pH of plant soil or hydroponic nutrient solution is an ongoing task. Macro and micro nutrients, ...

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    Original price $446.00 - Original price $736.00
    Original price
    $446.00
    $446.00 - $736.00
    Current price $446.00
  • Original price $143.00 - Original price $143.00
    Original price
    $143.00
    $143.00 - $143.00
    Current price $143.00

    GroLine Soil pH Tester (HI981030)

    HI981030 Soil pH Tester Designed to bring simplicity to pH testing of soil, the HI981030 GroLine Soil pH Tester is designed for taking dire...

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    Original price $143.00 - Original price $143.00
    Original price
    $143.00
    $143.00 - $143.00
    Current price $143.00
  • Original price $142.00 - Original price $142.00
    Original price
    $142.00
    $142.00 - $142.00
    Current price $142.00

    GroLine Soil Test™ Direct Soil Conductivity Tester (HI98331)

    HI98331 Direct Soil Conductivity Tester The HI98331 Soil Test™ is a pocket tester specifically designed to directly measure soil conductivit...

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    Original price $142.00 - Original price $142.00
    Original price
    $142.00
    $142.00 - $142.00
    Current price $142.00
  • Original price $104.00 - Original price $104.00
    Original price
    $104.00
    $104.00 - $104.00
    Current price $104.00

    GroLine Waterproof EC/TDS (ppm) Tester (HI98318)

    HI98318 Waterproof EC/TDS (ppm) Tester The HI98318 is our latest pocket meter for measuring the EC/TDS of a hydroponic nutrient solution. Th...

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    Original price $104.00 - Original price $104.00
    Original price
    $104.00
    $104.00 - $104.00
    Current price $104.00
  • Original price $104.00 - Original price $104.00
    Original price
    $104.00
    $104.00 - $104.00
    Current price $104.00

    GroLine Waterproof Hydroponic pH Tester (HI98118)

    HI98118 Waterproof Hydroponic pH Tester The GroLine HI98118 pH/temperature tester is our latest pocket meter for measuring the pH of a hydro...

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    Original price $104.00 - Original price $104.00
    Original price
    $104.00
    $104.00 - $104.00
    Current price $104.00
  • Original price $307.00 - Original price $307.00
    Original price
    $307.00
    $307.00 - $307.00
    Current price $307.00

    GroLine Waterproof Portable pH/EC/TDS Meter (HI9814)

    HI9814 Waterproof Portable pH/EC/TDS Meter Designed to bring simplicity to nutrient testing, the HI9814 Portable GroLine Meter is designed specifi...

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    Original price $307.00 - Original price $307.00
    Original price
    $307.00
    $307.00 - $307.00
    Current price $307.00

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