white spots on LR ??

[KennyKen]

maybe its bleaching,
most of my liverock bleached when i first set it up, but then after a few months all the coraline came back

[Der_Iron_Chef]

Do you have an urchin?

[fishguyxd]

yes to an urchin a small one but it has never eaten pieces like that .

[Zoaelite]

Usually white in coraline algae is an indication of growth or death. Any abrupt changes in tank chemistry that might of caused it? Other than than that the only thing I could attribute it too would have to be your urchin, they are known for it after all.
Levi