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Bluelab Guardian Monitor

Bluelab Guardian Monitor

Regular price £259.00 GBP
Regular price Sale price £259.00 GBP
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Bluelab Guardian Monitor

The Bluelab pH Probe is a high-quality pH measurement tool designed to work seamlessly with various Bluelab products.


  • 3 In 1 PH, EC & Temperature Monitor
  • Free Next Day UK Delivery
  • Tracks Acidity, EC and Temperature 
  • Flashing Alarms To Alert Changes
  • LCD Screen
  • Wall Mountable
  • EC, CF, TDS or PPM
  • Splashproof & Easy To Clean
  • Pay As You Grow With Clearpay


The Bluelab Guardian Monitor is a comprehensive 3-in-1 monitor that allows you to track pH, electrical conductivity (EC), and temperature in your hydroponic systems. Here are some key features and information about the Bluelab Guardian Monitor:


Measurement Capabilities

The Guardian Monitor provides real-time monitoring of pH, EC, and temperature, which are crucial parameters for plant health and nutrient uptake. Having this information readily available allows you to make timely adjustments and ensure optimal conditions for your plants.


Easy pH Calibration Function

The monitor features an on-screen calibration function for pH measurement. By following the instructions and using the provided pH calibration solutions (pH 4.0 and pH 7.0), you can calibrate your reservoir to the most accurate level for precise pH monitoring.


Flashing High & Low Alarms

Set your desired pH and EC ranges, and the Guardian Monitor will alert you with flashing high and low alarms if the measurements go outside of those ranges. These alarms help you identify and address any inconsistencies in acidity level, electrical conductivity, or temperature in a timely manner, ensuring that your plants stay in the optimal range.


Continuous Use & Flexible Mounting Options

The Guardian Monitor can be plugged in for continuous use, providing you with peace of mind and constant monitoring. It comes with a 2-meter cable, allowing you to position the monitor in the most convenient spot in your grow space or hydroponic system. The monitor also features flexible mounting options, including walls, posts, and racks, for easy installation.


Care Instructions

To prolong the life of the pH probe, it is recommended to keep it wet at all times when in use. When not in use, use the provided storage cap and regularly top up the potassium chloride (KCl) solution inside the cap. Spare probes are available for purchase if needed. The monitor is splashproof and can be wiped clean with a damp cloth as needed.


Bluelab Benefits

The Bluelab Guardian Monitor offers several advantages, including its 3-in-1 monitoring capability, large LED screen for easy viewing of measurements, customizable high and low alarms, long 2-meter cable for flexible positioning, and flexible mounting options. The monitor also allows you to view electrical conductivity in units of EC/CF, TDS, or ppm, temperature in units of ℃ or ℉, and pH in units of 7 or 4/10.

With the Bluelab Guardian Monitor, you can have constant visibility of pH, EC, and temperature levels in your hydroponic system, ensuring optimal conditions for your plants and making timely adjustments when necessary.

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