pH probe replacement
Replace the pH probe every 12-15 months.
You can buy the original NIDO pH probe here
1. Disconnect the IN and OUT hoses.
2. Remove the pH probe by loosening the pressprobe.
3. Insert the new pH probe as far as it will go and tighten the press-probe.
4. Connect the IN and OUT hoses.
5. Open the NidoPro app and from the settings menu > pH > Change to, and follow the tutorial.