• Hydrofarm - Active Eye Digital Light Meter

    This product is a precision instrument used to measure luminance (footcandles). The meter is fully cosine corrected for the angular incidence of light, meaning that if you are not holding the sensor perfectly perpendicular to the light source, the sensor will still read the light correctly. The sensor is stable and made of a long-life silicon photo diode. The digital light meter accurately measures to 40,000 FC. The meter’s built-in low battery indicator means you’ll never be caught by... Read More
    $83.95 each
    +
  • Hydrofarm - Digital Thirsty Light

    The Thirsty Light is a digital plant moisture sensor that blinks an LED to alert the user when it is time to water a potted plant. It is designed to be unobtrusive when left in the soil of a plant, where it continuously monitors conditions, testing the moisture level once per second.   Thirsty Light can sense 5 different levels of dryness, causing the light to blink faster as the soil gets dryer, increasing the urgency of its call to action. When it reaches the fifth level, "completely dry",... Read More
    $9.95 each
    +
  • Hydrofarm - Active Air Moisture, Light, PH Meter

    Gardeners can conveniently test moisture and pH levels with the handy Active Air 2-Way Meter. Moisture readings register on a scale of 0 (dry) to 10 (moist). pH readings between pH 0 (acidic) and pH 10 (basic) are represented. Light readings range from 0 (low light) to 2000 (very strong light). The durable, easy-to-read tester is suitable for indoors or out and needs no batteries to operate. Remove from soil and clean prongs after each use to ensure the moisture meter stays in top performance... Read More
    $14.95 each
    +
Results 1 - 3 of 3