Live rock bleaching out

[Nteal320]

I just purchased a 75 gallon tank that came with live rock about a week ago. The live rock has always been submerged except to take it out of the tank and into a tote of the original water from the tank until I have my tank drilled and ready. A couple of days ago I added dry base rock that I had soaked for awhile to the tote to start growing bacteria on them. Today the live rock seems to be bleaching out particularly on the the bottom sides of the rocks. Is this ok or what can I do? I'm slowly learning how to manage saltwater aquariums. I've only dealt with keeping freshwater, mainly cichlids.

 

[Nteal320]

Here is some pictures

 

[melosu58]

That`s normal when moving the rock from tank to tank or to cure it. The coralline will come back with a vengence over time.