Red Sea ReefSense pH & Temperature — Digital Reef Probe with Bluetooth Calibration

The Red Sea ReefSense pH & Temperature probe continuously tracks the fastest-moving parameter in a reef tank, plugged into a ReefControl controller. It is the same probe included with the Lite and Pro controllers — this page is for adding a second one, or replacing yours at end of life. Because it must be said plainly: per Red Sea's manuals, a pH probe is a wear item — about 12 months of continuous use, with a 6-month warranty.

What makes ReefSense probes different

Per Red Sea's official manuals, every ReefSense probe is digital and stores its calibration in onboard memory: it plugs into any port of a ReefControl Lite or Pro, moves between controllers without recalibrating, and calibrates over Bluetooth at the sink — with the pH 7 and pH 10 solutions. Recalibration is monthly: ten minutes that keep the readings trustworthy.

Lifespan — know this before you buy

A pH probe wears out by measuring: that is true of every brand, and Red Sea puts it in writing — about 12 months of continuous use, 6-month warranty. It is not a defect; it is electrode chemistry. Plan its annual replacement the way you plan your water tests: it is the price of readings you can trust. Red Sea also notes that a daily swing of 0.1 to 0.3 pH is normal in a healthy tank — before blaming the probe, look at alkalinity, aeration and room CO₂.

Frequently asked questions

Does the pH probe work on its own?

No — it is a sensor for the ReefControl Lite and Pro controllers. It takes one ReefSense port and its readings display in ReefBeat.

How often do I calibrate it?

Monthly, per Red Sea, with the pH 7 and pH 10 solutions. Calibration happens over Bluetooth with the probe at the sink — no need to touch the controller.

Why does my pH probe only last a year?

Because every pH electrode depletes — that is its chemistry, whatever the brand. Red Sea is upfront: about 12 months of continuous use, 6-month warranty. A reading that drifts despite a fresh calibration is the classic end-of-life sign.

Is it normal for pH to swing during the day?

Yes — 0.1 to 0.3 pH of daily swing is normal per Red Sea. Light, aeration and room CO₂ make a reef's pH breathe.

Why buy from ReefSolution

ReefSolution is an authorized Red Sea dealer in Canada — no customs or exchange surprises. The probe plugs into the ReefControl Lite or Pro, and the salinity probe is its natural companion on the second port. Shipping across Canada and expert advice in-store in Laval.