AquaReg PH-301 Digital pH Controller and Water Quality Monitor

Keep water acidity visible and easier to manage around the clock. This continuous pH monitor measures from pH 0.00 to 14.00 and displays readings in 0.01 increments. Selectable HI/LO action can activate a compatible external device when readings move above or below your chosen setpoint. It is a practical aquarium pH controller for users who need more than occasional handheld tests.

Key Features

• pH measurement range of 0.00–14.00
• Adjustable control setpoint from 3.50–10.50
• HI or LO output activation modes
• Two-point pH 4 and pH 7 calibration
• Detachable probe and clear LED display
• 110V or 220V versions available

Why Choose Our AquaReg PH-301

Unlike basic testers, AquaReg combines continuous measurement with an automatic control output. It can work with compatible dosing pumps, CO₂ solenoids, or other equipment within the controller’s rated load.

Perfect For

Ideal for aquariums, hydroponics, aquaculture, swimming pools, laboratories, water treatment, fish hatcheries, and educational testing.

How to Use

Connect the probe, calibrate it with suitable pH 7 and pH 4 buffer solutions, then set the desired value and HI/LO action. Keep the controller dry and verify voltage, plug, and output-load compatibility before connecting equipment.

Important Note

This device measures acidity and alkalinity only; it does not confirm water purity or drinking safety. Calibration buffers may need to be purchased separately.

Take Control of Every pH Change

Order AquaReg PH-301 today for convenient monitoring and responsive pH equipment control.