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Bluelab MONGUA Guardian Monitor for pH, Temperature, and Conductivity (TDS) Measurements in Water with Easy Calibration, 3 in 1 Digital Nutrient Meter for Hydroponic System and Indoor Plant Grow White

  • Based on 575 reviews
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Availability: Only 9 left in stock, order soon!
Fulfilled by GROWDOTS

Arrives May 23 – May 28
Order within 4 hours and 33 minutes
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Style: Guardian Monitor


Features

  • Monitor pH up and down, temperature, nutrient (TDS) level in water to maximize your grow and ensure plants get a balanced feed; General uses includes growing tent and reservoir; Selectable conductivity units include TDS, EC, ppm 500, ppm 700 and CF
  • This hydroponics tester has ATC that provides consistent reading regardless of any fluctuations in temperature; High and low alarm when outside parameters, selectable units include TDS, EC, ppm 500, ppm 700 and CF
  • Lab quality glass pH probe with easy two point calibration; Conductivity / temperature probe comes factory calibrated so it's ready to be used; Double junction probe is more accurate than test strips and drops
  • Combine with Bluelab pen and meter for full garden nutrients monitoring in water and soil; Other features: International power supply, water resistant design; KIT INCLUDES: Calibration solution, EC probe and pH probe, probe care kit is sold separately
  • Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment, built for growers; 2-Year Limited Warranty with proof of purchase (6-month warranty for pH probe)

Description

n just one glance it clearly conveys all 3 critical parameters for successful growth: pH, conductivity AND temperature.The Bluelab Guardian Monitor is a constant indicator of the desired levels of EC/ppm 700/TDS/CF, pH and temperature, enabling the grower to optimise these parameters as the crop progresses through each growing phase.The Bluelab Guardian Monitor is mains powered and is mounted to the wall or hung on a support and the probes simply placed into the reservoir.With the Bluelab Guardian Monitor monitoring your crops 24 hours a day and with the ability to set high and low alarms, a flashing display lets you know if one parameter moves away from the ideal, allowing you to make the required adjustments quickly and effectively.Features• 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• Temperature compensation• Greater tolerance to RF/electronic interference provided• International power supply• Replaceable double junction pH probe• Adjustable display brightness• Non-volatile memoryProbe TipsAll probes are interchangeable between all Bluelab productsProper hydration of ph probes is vital to maintain wickAll pH probes eventually need to be replaced—they can only house so much reference solutionKCl storage solution is required for optimum probe maintenanceRO water will reduce probe life


Product Dimensions: 7.6 x 4.92 x 1.57 inches


Item Weight: 7.7 ounces


Manufacturer: Bluelab Corporation Limited - Import (NZ)


Item model number: BLU27100


Batteries: 2 AAA batteries required.


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 23 – May 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Nutrient Reservoir necessity
Style: Guardian Monitor
This is such a sweet unit for a nutrient reservoir. Now i can just peek in and see that everything is perfect. Nice, easily visible, green light display. it tells you when and is easy to clean and calibrate. The plants are telling me the readings are plenty accurate. This upgrade is worth every penny. ... show more
Reviewed in the United States on July 25, 2022 by Mike V

  • Super Convenient Monitoring
Style: Guardian Monitor
I purchased this unit to monitor pH and EC/PPM for a Gardyn hydroponic tower. I had been testing both manually daily. It is so much easier and more convenient to be able to check both at a glance. It was somewhat expensive for monitoring a single tower, but I have no regrets given how much time I save in manual testing. ... show more
Reviewed in the United States on June 18, 2022 by Katherine T

  • Great product
Style: Guardian Monitor
Bluelab is the only way to go. All others suck
Reviewed in the United States on May 28, 2022 by Ashley J

  • Accurate Accurate Accurate
Style: Guardian Monitor
This little piece od simple equipment will make your growing experience somewhat worry free! Just follow the setup instructions and you’re set, it’s really that simple. But I’d invest in the cleaning kit and you’re really set to go and grow!
Reviewed in the United States on January 21, 2022 by Maurice Canon

  • The best for a reason
Style: Guardian Monitor
These are the best meters. Everyone knows it. They've always been unattainable to most home growers but at this price you can NOT get a single better piece of grow equiptment for the money. One thing to note though - mine came with the calibration solution for the ph, but it did not include the EC calibration solution which is supposed to be included. Had to take a star away for that since now I need to spend more money just to calibrate the thing. ... show more
Reviewed in the United States on March 27, 2020 by nick t

  • game changer!
Style: Guardian Monitor
without this tool in my garden i would not be as successful as i am, don't waste time with other brands,these guys set the bar for industry standards. THANKS
Reviewed in the United States on January 12, 2022 by martian

  • Product came with a rip in the wire
Style: Guardian Monitor
Ec probe wire came with a tare / small rip in it the wire not sure if safe to use like that and ec probe is part of the unit so it’s not like u can just change the wire
Reviewed in the United States on November 23, 2021 by Michael

  • Great product, update- not sure now..
Style: Guardian Monitor
Guardian it is! Calibrate once a month and it keeps me dialed it at a glance, no more pens and samples. Update. Few months later the ppm failed and had to Ship back for repair at my cost. This started off well but now I'm thinking it's just not made well. I have a ppm pen that's been working for 10 years and it came with a water filter lol, no reason a $300 unit can't last. ... show more
Reviewed in the United States on September 21, 2020 by Jeremy

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