Knowing the EC/ppm, pH and temperature that the Nutrient Delivery System is providing to the crop will give the grower the confidence that the plants will receive the proper nutrition that they require. By installing the in-line Guardian Monitor with mixing chamber kit, the grower can be assured of a well-blended solution with an easy-to-read display. Includes the Bluelab Guardian Monitor with in-line ppm/temperature and pH probes and all necessary plumbing connections to install into the Dosatron system.