White rocks, not just the sand.

[norfolkgarden]

This is a side note to another discussion about rocks.

Been to an LFS in Atlanta.

The sand was white of course.
But so was the rock. Sparkling white. Like it was brand new.

My rock doesn't have tufts of algae on it other than the gray-green surface. We have a good CuC.
Most of our rock is covered in coralline algae.
But the areas of bare rock are definitely not sparkling white.

What's the secret?

Thanks!

 

[Dennis McGrath]

Maybe it WAS brand new?

 

[AdamNC]

White rocks are dead rocks.

 

[norfolkgarden]

White rocks are dead rocks.

Lol, but it looked so clean! Like a commercial of someone's fake house.

They were fish only tanks with a few pretty white rocks thrown in.
Chemical dosing?

 

[Dennis McGrath]

Might be just some base rock that they put in the display tank for looks. I'm sure they had live rock in the refugium.