Marine PH Checker
- Ships Australia-wide — fast dispatch from Eastwood
- Or collect in store with the rest of your order
- Genuine stock — marine specialists since 2012
Overview
pH is one of the more variable water parameters in a reef tank, shifting throughout the day with photosynthesis, respiration and gas exchange — and a rough test strip just doesn't cut it for tracking it properly. The Marine PH Checker from Hanna is a dedicated digital tester built to take the guesswork out of pH monitoring, delivering accurate, repeatable readings at the press of a button.
It bridges the gap between basic hobbyist test kits and full laboratory instrumentation, giving genuinely reliable digital results without the cost of a benchtop meter.
Key features
- Digital pH readout, removing the guesswork of matching colours by eye on a chart
- Built-in temperature compensation for accurate readings across a range of tank temperatures
- Simple calibration process using standard buffer solutions
- Compact, portable design suited to quick spot-checks anywhere around the tank
Who it's for
Reef keepers who want more accurate, repeatable pH readings than a standard liquid or strip test kit can offer, particularly useful for tracking daily pH swings or troubleshooting CO2-related issues.
Setup & tips
- Calibrate regularly using fresh buffer solutions for the most accurate ongoing readings
- Rinse the electrode with RO/DI water between uses and store it properly to extend its working life
- Test at consistent times of day if you're tracking pH swings, since natural daily fluctuation is normal
- Replace the probe when readings become slow to stabilise or drift noticeably after calibration



