Unidentified spongy thing

[Balanje]

i have a white spongy thing growing on my live rock and at the base of my hammer coral. Any idea what this could be???

90 gal reef tank that has been established for a little over a year and otherwise quite healthy with a mix of coral and fish.

 

[Dsnakes]

Some sort of sponge. I’ve got them a few places in my tank as well.

 

[Balanje]

Some sort of sponge. I’ve got them a few places in my tank as well.

They all good or should I be concerned?

 

[reef lover]

If u find them unsightly u can remove them. But they are harmless filter feeders.