Sick Coral?

[gridley]

About a month ago I bought a Sunflower Coral from a LFS. A few weeks ago I noticed a white encrusting "something" on the coral. In the past few days I have noticed that it seems to be spreading. Ideas? Suggestions?

This first picture is the area that I first noticed it. You can see three areas where it is growing.


This second picture (not as good of an image shows where it appears to be spreading - it is thinner and covering a larger area.



Thanks for whatever help you can give.