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PHX pH/ORP Monitor & Controller with Probes







GrowControlTM PHX+ precision digital pH and ORP sensor transmitter, data logger and mini-controller for pH, ORP and temperature. Ideal for applications such as aquarium and aquaponics, pool & spa or industrial/commercial chemical process monitoring and control.

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HTG Supply is committed to providing you with the very best products, pricing and service in the industry. We will ship your order fast and discreetly packaged to protect your privacy. Buy with confidence knowing your HTG Supply purchase includes simple returns as well as lifetime product support. Call our team of real growing experts with your purchasing or product use questions, and we will be here to help!

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Customer Service:  1-866-710-GROW (4769) | | Hours: Mon-Fri 9:00 a.m. to 5:00 p.m.


Optional color display and 3-button interface make this unit capable of operating stand-alone for sensor monitoring, alerts, dosing pump control and more. Precision digital electronics with isolated probe inputs accurately read and record sensor data. Internal memory logs 21,600 data points per sensor for months or years of storage. Accurate real-time-clock with battery backup keeps log time accurate during power outages. Optional color display screen features large, bright green sensor readings for easy visibility, plus a range of functions that can be performed directly from the menus including:

  • High/low history
  • Graphical history
  • Alarm set points
  • Sensor calibration
  • Data logging options

Sensing | Logging | Transmitting | Monitoring | Dosing

  • Water Temperature: -20 – 60°C
  • pH: 0-14 pH
  • O.R.P. or D.O.: +/-1000mV / 0-20mg/ml


download Data Sheet

download Installation Manual

download MODBUS Manual


download Setup & Operation Instructions


LCD Display
Add the LCD display/button interface option for large, bright color sensor readings and menus for on-board calibration, alarms, graphing and even dosing pump control!

Connects the GrowNET port of any Agrowtek sensor to a PC for datalog download to .csv, graphing, calibration, configuration, updates, and more using free PC software.

LX2 RS-422/485 ModLINK
Connects the GrowNET™ port of any Agrowtek sensor to RS-422/485 for MODBUS RTU.

WiFi Module
Upgrade the SXE sensor to include a WiFi module for access to the system via a phone or web browser (coming soon.)


  • Greenhouses & Growing Facilities
  • Aquarium, Aquaponics
  • Analytical, Research & Academic
  • Pool & Spa
  • Industrial Process Monitoring
  • OEM & custom applications
Weight 10 lbs

PHX temperature/pH, PHX temperature/pH+ORP, PHX temperature/pH+DO