Grainfather Staining

[Fezzinsk]

I have some staining / dullness on the base of my G30 that doesn't come off, I've checked lots of places but can't find the information i need, pictures are often missing.

I've had the unit over a year now, and I'm wondering does it need to be repasivated? Or is this another issue? Any help would be greatly appreciated.

 

[dwhite60]

Looks like "beer stone". It's from the minerals in the water you use and the grain. Might be unsightly but doesn't hurt anything.

Ive been told, a good long soak with some hot PBW will help take it out.

 

[Sammy86]

Barkeepers friend will help with that!

 

[GBRbrew]

a little white vinegar soak might clean that up