How to clean my Pegasus Sink
 

Hi All,
I just bought a new black Pegasus sink from Home Depot. It is 80%
Granite and 20% Acrylic, and I was wondering if anyone out there has
any tips how to clean it. I used to use good ol' CLR on my old sinks,
but am thinking that that might be a bit too harsh for the new one.
Any suggestions?