White stuff on Live Rock?! Help??

[Hiruki]

Is this dangerous for my fish?? What should I do? I'm picking up a Tiger Tail Cucumber, will that help it? Its a 29 Biocube HQI with currently Turbo Snail, Cleaner Shrimp, Emerald Crab and a pair of Black Ice Clowns.


<a href="http://s1108.photobucket.com/albums/h420/Hapa91/?action=view&amp;current=IMG_8281.jpg" target="_blank"><img src="http://i1108.photobucket.com/albums/h420/Hapa91/IMG_8281.jpg" border="0" alt="Photobucket"></a>

[Sidefunk]

Not sure, but it just looks like some dead coraline or something. Personally i would not be worried.

[SushiGirl]

Either dead coralline or white coralline (I've had that before). A tiger tail cuke won't do anything for your rock, they eat sand.

[EastCoastFishes]

I have that on my lr too. Hasnt spread or really done anything bad.

[Hiruki]

Sweet! Thanks guys!