Environment & Controls

Horizen Hydroponics has everything you need to keep your indoor garden the perfect environment for your favorite plants! Here you'll find all of the necessary reflective materials, air conditioners, humidifiers and dehumidifiers, fans, CO2 equipment, and environmental controllers that make indoor growing possible. We feature the most reliable gear from top brands such as Autopilot, Can Filters, Durabreeze, Ideal Air, Thermoflo and more! Free shipping available on many items! Appliances and other large items may require special shipping, please inquire before ordering about freight delivery.

Check out our in-depth guide to grow room environment on YouTube!

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  1. New

    Autopilot REVOLVE F20 Repeat Cycle and Light Combo Timer

    The Autopilot REVOLVE F20 Repeat Cycle and Light Combo Timer controls lighting schedules and timed cycling functions in your grow area with perfect digital accuracy. Learn More
    $193.50 Price:
  2. New

    Autopilot Analog to Digital Conversion Module

    The Autopilot REVOLVE F20 Repeat Cycle and Light Combo Timer controls lighting schedules and timed cycling functions in your grow area with perfect digital accuracy. Learn More
    $80.99 Price:
  3. Autopilot ECLIPSE F60 Digital Environmental Controller

    The Autopilot ECLIPSE F60 Digital Environmental Controller combines precise temperature and humidity control along with cycle timing to create an intelligent yet easy-to-use unit. Learn More
    $194.50 Price:
  4. Autopilot REVOLVE F20 Repeat Cycle and Light Combo Timer

    The Autopilot REVOLVE F20 Repeat Cycle and Light Combo Timer controls lighting schedules and timed cycling functions in your grow area with perfect digital accuracy. Learn More
    $193.50 Price:
  5. Autopilot Desktop CO2 Monitor with Memory and Data Storage

    Developed to detect the presence of CO2 and to monitor temperature & relative humidity in ambient air, this device is smart, compact and easy to use. Learn More
    $148.50 Price:
  6. Autopilot CO2 Monitor & Controller w/15' Remote Sensor

    Autopilot APC8200 CO2 Monitor & Controller with Memory offers a simple and affordable way to control, monitor and record CO2 levels over an adjustable period of time Learn More
    $260.99 Price:
  7. Autopilot PPM-5 CO2 Controller

    The Autopilot PPM-5 CO2 Controller is a simple and affordable way to control your CO2 injection device. Learn More
    $283.49 Price:
  8. Autopilot Desktop CO2 Monitor & Data Logger

    Accuracy, innovative features, and unbeatable affordability in one small, user-friendly CO2 monitor. Learn More
    $130.49 Price:
  9. Autopilot Dehumidifying Humidistat

    The Autopilot Dehumidifying Humidistat is a compact and easy-to-use controller for dehumidifiers and exhaust fans. Learn More
    $39.99 Price:
  10. Autopilot Cooling Thermostat

    The Autopilot Cooling Thermostat is a compact and easy-to-use controller for air conditioners and exhaust fans. Learn More
    $39.99 Price:

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