The Guardian is the absolute top device from Bluelab. The guardian is operated stationary with mains power. As well as the tubes can always be left in the nutrient solution.
The Bluelab Guardian permanently shows you the desired values for EC / TDS / ppm 500 (KCl) / ppm 700 (NaCl), pH and temperature, so that you can quickly and easily optimize them in each growth phase.

The Guardian monitors your plants 24 hours a day. You can set high and low values so that the flashing screen shows you any deviation from the ideal value. This allows you to react quickly and efficiently.

• Adjustable screen brightness

• Large, easy-to-read display

• No calibration required for conductivity and temperature

• PH calibration at the touch of a button

• Units for conductivity and temperature freely selectable

• Alarm signal for high and low values