Sponge?

[Pete Luna]

New to reefing, so my pee-brain said growth at first. Now I think not. Is this a sponge? If so how do I get rid of it?

 

[Lovemyreef2015]

New to reefing, so my pee-brain said growth at first. Now I think not. Is this a sponge? If so how do I get rid of it?

Seems this is a double post but I will answer this too. You can use a soft toothbrush to get the sponge off if you don't like the look of it.