Bluelab Guardian Monitor


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Available on back-order


    The simplest and most effective reservoir monitor you could ever own!

    The Bluelab Guardian Monitor provides 24 hour continuous reading for pH, conductivity (EC/ppm 700/TDS/CF) and temperature within a nutrient solution.

    Optimizing these critical parameters through a plants’ growing phase helps ensure a successful crop.

    Designed for indoor use, the Guardian Monitor can be mounted on a wall or hung on a support bar. Set up your reservoir, place the pH and conductivity probes in the solution, then adjust and glance!

    Simply set high and low alarm states – if the solution moves away from the ideal range, the display flashes. A quick look at the monitor will let you know when your nutrient solution needs adjusting.




    • Plant-safe green LEDs
    • Large easy to read displays
    • No calibration required for conductivity and temperature
    • Simple push button pH calibration
    • Selectable values for conductivity and temperature
    • Flashing high and low alarms
    • Greater tolerance to RF / electronic interference provided
    • Water resistant design
    • International power supply included
    • Replaceable double junction pH probe included
    • Adjustable display brightness
    • Non-volatile memory (setting retained when power lost)

    Additional information

    Weight 0.95 kg
    Dimensions 14 × 9 × 21 cm
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