This replacement cell replenishes the minerals and lasts for up to 6 months*.

• Genuine manufacturer part CBI-CELL-BSL-BOX
• Compatible with all systems manufactured by ClearBlue Ionizer that have a BLACK receptacle
• Maintains appropriate mineral level for up to 6 months*
• Proprietary blend of copper and zinc
• Algaecide, clarifier, and mild anti-microbial
• Get the Starter 3 month cell here
• Get the Long Life 12-18 month cell here

How do I get more life from the cell?

There are several things you can do to maximize the life of the mineral cell:

• VERY IMPORTANT: Keep pH between 7.2 and 7.6 and alkalinity between 80 ppm and 120 ppm – high pH and alkalinity will cause corrosion to the electrodes, and they will degrade much faster
• ALSO IMPORTANT: Keep TDS below 2,000 ppm – high TDS, especially with high chloride concentration, will cause corrosion to the electrodes, and they will degrade much faster
• Keep the number setting turned down as low as possible to maintain 0.2 ppm copper – any more than that is not necessary and will degrade the cell faster
• Test for copper regularly and turn down the number setting if the copper level drifts above 0.2 ppm
• Test for phosphates regularly and use a phosphate remover if the level is above 200 ppb – phosphates in the water increase algae growth, which uses up copper
• FOR MORE TIPS: Visit this blog post from the manufacturer

When do I change the cell?

If your controller has a blue number screen, it is time to replace the cell when the ‘Mineral Action’ or ‘Ionizing’ light is flashing red. If your controller has a red number screen, the ‘Ionizing’ light will be off when it’s time to replace the cell.

How do I change the cell?

You can replace the cell in minutes by hand, without tools or tape. Please see the instructions here.

Cell Compatibility

This cell is compatible with the following brands and models. The brand name is on the front of the controller, and the model number is on the back. If your system has a black receptacle, this cell will work:

• Mineral Lion CBI-350B-25/40
• Nature’s Pure CBI-350B-25/40-MBG

* Cell life is not guaranteed and varies depending on pool/hot tub size, weather conditions, usage, copper level, and system settings. Use lower system settings for longer cell life