pH/ppm Meters & Solutions

Mastering pH and ppm management in nutrient solutions is the secret to success for many indoor growers. pH (short for potential hydrogen) is the measure of acidity or alkalinity of a water solution and plays a critical role in how well the plants' roots are able to absorb nutrients. ppm (parts per million) refers to a measurement of electrical conductivity in a nutrient solution to provide a context for the relative concentration of minerals in the water. By keeping these two values in a range that is desirable to plants, you ensure that your garden is always performing at its best. At Horizen Hydroponics, we carry the most trusted pH and ppm meters on the market. Free Shipping Available on orders over $250!

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  1. General Hydroponics pH Test Kit

    The pH Test Kit is a liquid tester which covers a pH range of 4.0 - 8.5. Includes sampling tube, reagent, and color comparison card. Learn More
    $6.75 Price:
  2. Sale
    Bluelab Combo Meter Plus

    Bluelab Combo Meter Plus

    The Bluelab Combo Meter Plus is an all-in-one, convenient portable solution for accurate measurement of pH, conductivity, and temperature in nutrient solution. The battery-powered, lightweight unit can be used anywhere, anytime to measure critical parameters related to nutrient uptake in plants. Learn More

    Old Price: $299.99

    $249.99 Special Price

  3. HM Digital Waterproof pH Meter

    The HM Digital Waterproof pH Meter is ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics and more. Learn More
    $69.99 Price:
  4. Sale
    HM Digital pH HydroTester

    HM Digital pH HydroTester

    The HM Digital pH HydroTester is a reliable pH meter that is ideal for testing applications such as hydroponics and gardening, pools and spas, aquariums and reef tanks, water ionizers, drinking water and more. The sleek, lightweight design is water-resistant, features one-touch automatic digital calibration, measures temperature, has automatic temperature compensation (ATC) and an LCD screen. This tester includes storage solution in a sponge embedded in a translucent cap, pH 7.0 buffer and batteries. This product carries a one-year warranty. Learn More

    Old Price: $55.00

    $49.99 Special Price

  5. Bluelab Pro Controller Connect (SO Only)

    Perfect for hobby to large-scale growers, the Bluelab® Pro Controller™ Connect is the simple solution for automatic feeding systems. Learn More
    $880.00 Price:
  6. HM Digital HydroMaster HM-500

    The HM Digital HydroMaster HM-500 monitors pH, electrical conductivity (EC), total dissolved solids (TDS) and temperature with very high accuracy. Learn More
    $325.00 Price:
  7. Bluelab Soil pH Pen

    Bluelab Soil pH Pen measures pH and temperature (°F and °C) to ensure proper nutrient uptake from nutrient solutions and soil. Learn More
    $167.00 Price:
  8. Bluelab Guardian Monitor

    The Bluelab Guardian is a constant indicator of the desired levels of EC, pH and temperature, allowing these parameters to be optimized as the crop progresses through each growing phase. Learn More
    $328.00 Price:
  9. Bluelab Guardian Monitor Connect

    The Bluelab Guardian Monitor Connect is not only a constant indicator of pH, conductivity and temperature of nutrient solutions, it also data logs these critical parameters to the computer. Learn More
    $449.00 Price:
  10. Bluelab ppm Pen

    The Bluelab ppm Pen measures conductivity and temperature and is a great way to ensure plants are receiving the proper amounts of nutrients. Learn More
    $85.00 Price:

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