Recirculation Pump has Calcium Coming out

[Peacepipes]

***Moved to correct forum, under General DIY.

Why is there is there calcium coming out of our hot water recirculation pump?
Should I Fix this?
How?

(Thank You......)

 

[Cacher_Chick]

It is a slow leak, which does not appear to be urgent, but yes, we generally would fix a leak, no matter how small it may be.