Product Details
- Model: GLXPROBEPH
- Product type: pH probe replacement
- Brand compatibility: Hayward
- Intended use: Pool-water pH monitoring
- Compatible system type: Hayward Sense and Dispense chemistry automation systems
- Also fits: Verify with AQR-PRO-SD and HPC-4-ACT-RC system requirements before ordering
- Replacement part only: Not a full controller, ORP probe, salt cell, or standalone chlorine generator
- Related sensor: ORP probe is separate when required
- Best for: Replacing a worn, unstable, dirty, damaged, or misreading pH probe
- Buyer note: Confirm part number, connector style, cable condition, and system compatibility before purchase
- Package contents: Confirm included items before publishing
Compatibility Notes
Use this probe when your Hayward Sense and Dispense system needs a pH sensor replacement. If your system also monitors sanitizer activity, make sure you are not looking for the ORP probe for Sense and Dispense, since the pH probe and ORP probe are different parts.
If you are replacing multiple chemistry control parts, review the Hayward Sense and Dispense automation system to confirm how the pH probe, ORP probe, flow cell, and controller work together.
This part should be selected by part number and system compatibility, not by product image alone. Similar pool probes can look alike but may use different connectors, calibration requirements, or controller compatibility.
What the pH Probe Does
The pH probe measures how acidic or basic the pool water is. A working pH probe helps the controller read water balance more accurately, which can support better chemical control when the full Sense and Dispense system is operating correctly.
A worn, dirty, damaged, or unstable probe may cause inaccurate readings. If the controller readings do not match manual water testing, the probe may need cleaning, calibration, or replacement.
Installation and Setup Notes
Turn off power to the pool automation system before removing or installing the probe. Follow the Hayward system manual for the correct probe location, connection, startup, and calibration steps.
After installation, allow the probe time to stabilize in the water before relying on the reading. pH readings can be affected by water balance, probe cleanliness, calibration solution, flow through the sensing chamber, and the condition of the cable or connector.
If the system shows a flow warning or inconsistent water movement through the sensing chamber, check the Hayward flow switch separately before assuming the pH probe is the only issue.
If multiple sensor readings are incorrect, a temperature sensor replacement may also need to be checked as part of the troubleshooting process.
Maintenance Tips
Keep the probe tip clean and avoid scratching or touching the sensing surface. Do not use abrasive tools or harsh cleaners on the probe.
Follow the manufacturer’s guidance for probe cleaning, calibration, and storage. If the probe has been stored dry, exposed to freezing temperatures, or shows visible damage, verify whether it is still usable before installation.
Before You Order
Check these details before purchase:
- Confirm the part number GLXPROBEPH or GLX-PROBE-PH.
- Make sure your system needs a pH probe, not an ORP probe.
- Compare the connector, cable, and probe shape with your existing part.
- Confirm compatibility with your Hayward Sense and Dispense system.
- Check water balance, calibration solution, flow, and wiring before replacing the probe.
Do not order this part if you need a full automation system, salt cell, ORP probe, or chemical feeder.












