Green Air THC-2 Total Humidity Controller | Humidify & Dehumidify Sierra Natural Science The integration of proprietary pH

The integration of proprietary pH Perfect Technology means your reservoir stays within the "sweet spot" for nutrient absorption

a cool spectrum that keeps young plants short and stocky through early growth

All AutoPot Watering Systems are extremely versatile and can be used with the medium / substrate of your choice

including a controller mounting plate with passthroughs

Green Air THC-2 Total Humidity Controller | Humidify & Dehumidify Sierra Natural Science The integration of proprietary pHGreen Air THC 2 Total Humidity Controller The THC 2 controls humidity automatically and switches between humidify and dehumidify modes. It powers your equipment whenever relative humidity varies from the adjustable set point. In dehumidify mode, high humidity runs your fans or dehumidifier until RH drops about 5%. Then it holds off until humidity climbs 5% again. Holding Grow Room Humidity in Either Direction Run it in dehumidify mode to pull damp air