Does scale still occur even with a water softener?

[compddd]

I descaled my electric kettle after we had our new water softener installed thinking I would never need to do it again, but now a couple months later the bottom inside of the kettle looks like this. I’ve tested with Hach 5B multiple times and it turns blue with 0 drops.

 

[Reach4]

Softeners will reduce scale, but they don't take out everything non-soluble. You might have silica, for example.

 

[Sponsor]

 

[WorthFlorida]

Water softener is a catalyst and there is an ion exchange between the sodium and any calcium & magnesium.