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Meters

  • mini greenhouse thermo hygrometer bottom
    mini greenhouse thermo hygrometer
    Save $2.00 Save $0.00
    $20.00
    $20.00 - $20.00
    $20.00
    $18.00
    $18.00 - $18.00
    $18.00

    Mini Greenhouse Thermo-Hygrometer

    The Thermo-Hygrometer mounts to the side of your mini greenhouse and reads temperature and humidity inside the dome. It ensures that plants get the...

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    $20.00
    $20.00 - $20.00
    $20.00
    $18.00
    $18.00 - $18.00
    $18.00
    Save $2.00 Save $0.00
  • gs4 pH pen
    gs4 pH pen
    $215.00 - $215.00
    $215.00
    $215.00 - $215.00
    $215.00

    GroStar GS4 pH/EC/500ppm/700ppm/Temp (5-in-1) Combo Pen

    A lab-grade tool designed specifically for horticulture, this easy-to-use pen offers all the functionality you need. Quickly measure and calibrate ...

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    $215.00 - $215.00
    $215.00
    $215.00 - $215.00
    $215.00
  • GS1 pH pen product highlights
    GS1 pH pen
    $139.00 - $139.00
    $139.00
    $139.00 - $139.00
    $139.00

    GroStar GS1 pH Pen

    A lab-grade tool designed specifically for horticulture, this easy-to-use pen allows you to quickly measure and calibrate pH. Premium probe technol...

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    $139.00 - $139.00
    $139.00
    $139.00 - $139.00
    $139.00
  • HM Digital PH-80 pH/Temperature Meter
    $46.50 - $46.50
    $46.50
    $46.50 - $46.50
    $46.50

    HM Digital PH-80 pH/Temperature Meter

    An economically priced, reliable pH meter that is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums &...

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    $46.50 - $46.50
    $46.50
    $46.50 - $46.50
    $46.50
  • gardena smart flow water meter
    Garden Smart Flow WaTer Meter
    Save $7.00 Save $0.00
    $60.00
    $60.00 - $60.00
    $60.00
    $53.00
    $53.00 - $53.00
    $53.00

    Gardena Smart Flow Water Meter

    This water meter measures water usage daily, monthly, by season, or yearly. The LCD screen clearly displays information with measurements in liters...

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    $60.00
    $60.00 - $60.00
    $60.00
    $53.00
    $53.00 - $53.00
    $53.00
    Save $7.00 Save $0.00
  • GS3 ec pen product highlights and description
    GS3 ec pen
    $139.00 - $139.00
    $139.00
    $139.00 - $139.00
    $139.00

    GroStar GS3 EC Pen

    A lab-grade tool designed specifically for horticulture, this easy-to-use pen allows you to quickly measure and calibrate water EC, PPM (500), PPM ...

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    $139.00 - $139.00
    $139.00
    $139.00 - $139.00
    $139.00
  • grostar gs3-e replacement ec electrode
    $65.00 - $65.00
    $65.00
    $65.00 - $65.00
    $65.00

    GroStar GS3-E Replacement EC Electrode

    This replacement probe for the GroStar GS3 EC Pen allows you to replace your pen's probe and extend the life of your tool. Premium probe technologi...

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    $65.00 - $65.00
    $65.00
    $65.00 - $65.00
    $65.00
  • grostar gs1-e replacement ph electrode
    $60.00 - $60.00
    $60.00
    $60.00 - $60.00
    $60.00

    GroStar GS1-E Replacement pH Electrode

    This replacement probe for the GroStar GS1 pH Pen allows you to replace your pen's probe and extend the life of your tool. Premium probe technologi...

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    $60.00 - $60.00
    $60.00
    $60.00 - $60.00
    $60.00
  • P3 International Save a Drop Water Meter
    Save $7.00 Save $0.00
    $24.00
    $24.00 - $24.00
    $24.00
    $17.00
    $17.00 - $17.00
    $17.00

    P3 International Save a Drop Water Meter

    Over-watering plants and shrubs can diminish plant health. Use this easy-to-read meter to measure how much water is flowing out of the hose. While ...

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    $24.00
    $24.00 - $24.00
    $24.00
    $17.00
    $17.00 - $17.00
    $17.00
    Save $7.00 Save $0.00
  • HM Digital COM 100 Waterproof EC/TDS/Temp Combo Meter
    $75.99 - $75.99
    $75.99
    $75.99 - $75.99
    $75.99

    HM Digital COM-100 Waterproof EC/TDS/Temp Combo Meter

    The COM-100 is a professional-level EC/TDS meter at an unbeatable price. It is ideal for all water quality testing, water purification applications...

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    $75.99 - $75.99
    $75.99
    $75.99 - $75.99
    $75.99
  • grostar gs4-e replacement ph/ec electrode
    $96.00 - $96.00
    $96.00
    $96.00 - $96.00
    $96.00

    GroStar GS4-E replacement pH/EC combo electrode

    This replacement probe for the GroStar GS4 5-in-1 Combo Pen allows you to replace your pen's probe and extend the life of your tool. Premium probe ...

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    $96.00 - $96.00
    $96.00
    $96.00 - $96.00
    $96.00
  • Luster Leaf Digital Soil pH Meter
    Save $5.00 Save $0.00
    $24.00
    $24.00 - $24.00
    $24.00
    $19.00
    $19.00 - $19.00
    $19.00

    Luster Leaf Digital Soil pH Meter

    Instantly measure pH with this handy tool. Details: Digital display Reads pH from 3.5 to 9.0 Instructions and plant pH preference list included

    $24.00
    $24.00 - $24.00
    $24.00
    $19.00
    $19.00 - $19.00
    $19.00
    Save $5.00 Save $0.00
  • Luster Leaf Digital Moisture Meter
    Save $4.00 Save $0.00
    $21.00
    $21.00 - $21.00
    $21.00
    $17.00
    $17.00 - $17.00
    $17.00

    Luster Leaf Digital Moisture Meter

    Instantly measure moisture level with this handy tool. Details: Digital display Moisture level measured on a scale from 0 to 9.9 Includes printed ...

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    $21.00
    $21.00 - $21.00
    $21.00
    $17.00
    $17.00 - $17.00
    $17.00
    Save $4.00 Save $0.00
  • HM Digital Replacement Platinum Sensor for COM-100
    $35.00 - $35.00
    $35.00
    $35.00 - $35.00
    $35.00

    HM Digital Replacement Platinum Sensor for COM-100

    A spare sensor for HM Digital EC/TDS/Temp Combo Meter model COM-100. Details: Features platinum TDS/EC sensor and thermister

    $35.00 - $35.00
    $35.00
    $35.00 - $35.00
    $35.00
  • GroStar GS2-E replacement Soil Spear pH electrode
    $220.00 - $220.00
    $220.00
    $220.00 - $220.00
    $220.00

    GroStar GS2-E Replacement Soil Spear pH Electrode

    This replacement probe for the GroStar GS2 Soil Spear pH Pen allows you to replace your pen's probe and extend the life of your tool. Premium probe...

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    $220.00 - $220.00
    $220.00
    $220.00 - $220.00
    $220.00
  • grostar gs2 SOIL pH pen
    $310.00 - $310.00
    $310.00
    $310.00 - $310.00
    $310.00

    GroStar GS2 Soil pH Pen

    A lab-grade tool designed specifically for horticulture, this easy-to-use pen allows you to quickly measure and calibrate pH and temperature in nut...

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    $310.00 - $310.00
    $310.00
    $310.00 - $310.00
    $310.00

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