AquaViva Pro pH Controller – pH monitor with probe

This pH controller is intended for planted aquarium keepers who run CO2 injection and want the gas supply regulated against a set pH value. It replaces manual adjustment of CO2 flow with a probe-based control loop that opens and closes the gas line as the water reading changes.

Why it matters

• A pH probe with a 200 cm cable measures water in real time. When pH is above the setpoint, the unit releases CO2, and when the setpoint is reached, it shuts the supply off.
• Temperature compensation uses a separate temperature probe (150 cm cable, suction cup) to correct the pH calculation for the actual water temperature, which is shown on the display.
• The probe can be recalibrated with the included pH 4 and pH 7 buffers and calibration cup.
• The unit mounts on the CO2 cylinder with a velcro strap pocket or directly on a cabinet using mounting holes, and its footprint is 7 x 2 x 10 cm.

Specifications

• pH setpoint range: 5.0–9.0 pH
• pH display range: 1.0–13.0 pH
• pH control and reading accuracy: 0.1 pH
• Temperature reading range: 10 °C to 40 °C
• Dimensions: 7 x 2 x 10 cm
• Weight: 0.64 kg
• Probe mounting on glass thickness: 4 mm to 25 mm
• Cylinder pocket: fits most cylinders from 2 l to 8 l
• Controls: 12V solenoid valve (not included)
• CO2 cylinder and solenoid valve: not included
• Included: pH controller, pH probe (200 cm cable, glass holder), temperature probe (150 cm cable, suction cup), pH 4 and pH 7 buffers, triple calibration cup, velcro cylinder pocket, power supply (120 cm cable), instructions in Polish and English

What it works with

The controller is built for CO2-injected planted tanks where a 12V solenoid valve on a CO2 cylinder of 2 l to 8 l is used. The mounting options and probe cable lengths suit standard aquarium glass from 4 mm to 25 mm thick. Because the solenoid valve and cylinder are sold separately, confirm that your CO2 setup uses a 12V valve before purchase.