What is this white thing?

[Xiar]

I have just noticed these white spot things on a live rock in my tank. I can’t figure out what they are. There is a bunch of them all over just this rock.

 

[GThompson]

Pineapple sponges. They seem to grow in new tanks. Leave them be and they will eventually disappear

 

[GThompson]

BTW, welcome to R2R

 

[Xiar]

Pineapple sponges. They seem to grow in new tanks. Leave them be and they will eventually disappear

Thanks for letting me know. And thanks for the welcome.

 

[Idoc]

Pineapple spongess are good things...i have a bunch of them in my tank and sump

 

[reef lover]

#WelcometoR2R !