When do I change my pool ionizer cell?

How do I know when it’s time to replace my mineral cell?

The ClearBlue mineral cell will last 6 – 12 months depending on the size and usage of your pool or spa. In a pool, the first cell will go quicker because the minerals need to ramp up in the water. Once they have ramped up, there are very stable, even over the winter. So, subsequent cells will last longer.
If the ‘Ionizing’ light on the ClearBlue is OFF, it’s time to replace your cell:
Pool Ionizer Ionizing

 

 

If your cell plates look like this, it’s almost time to replace it:
Almost spent pool ionizer electrode
This person waited a bit too long: