Hanna GroLine Hydroponic Nutrients Monitor for pH, EC, TDS, and Temperature Stone Wool 2x AQUAvalve

2x AQUAvalve

Designed specifically for the dry ice extraction process

Hand-Cranked Sweeper Curtains: The manual operation of the sweeper curtains is controlled by a removable hand crank

Micro promises a comprehensive nutrient spectrum for your plants throughout their life cycle

humid air through the carbon filter and out of the tent to hold temperature and negative pressure

Hanna GroLine Hydroponic Nutrients Monitor for pH, EC, TDS, and Temperature Stone Wool 2x AQUAvalveGrow better with GroLine. The HI981420 GroLine Monitor provides 24 hour continuous monitoring of pH, conductivity (EC or TDS), and temperature in hydroponic nutrients. Quick to setup and simple to use, this monitor was designed with Hydroponics, Aquaponics, and Greenhouses in mind. Make your nutrient solution easy to manage with the GroLine Monitor and combined pH EC Temperature probe. High and low alarms with LED indicator. Easy viewing on the large