White... Stuff? Growing on my Live Rock

[GatorDrew]

I have no idea what this is and no idea how to get rid of it. My LFS says the water levels are perfect...

Any idea?

EDIT!::: Sorry about the large images when I first post this. Corrected now

 

[melosu58]

Can you maybe get a pic without the flash. Too bright to really tell.

 

[GatorDrew]

Yea... my digital camera is broken so I had to take the picture with my phone. The flash is actually off on the first too... LOL.

I'll try again in a bit..

Thanks though

 

[Devilishturtles]

Are they hard? Look like tubeworm "shells". Else could be some sort of filamentous sponge? Either way, nothing to worry about, IMHO. I have those all over my live rock, usually underneath or under the sand.

 

[GatorDrew]

Definitely soft. It's mostly growing beneath my live rock... but it's starting to make it's way around. Kinda annoying... and not pretty... LOL.

Is there anything I can do to keep that in check?

 

[roka64]

It does look like sponges, mine grow under the rock. I haven't seen any of them grow around to the top of the rocks. I'm not sure how to control them, but I wouldn't worry, I doubt they will grow in the brighter areas.