Is this black sea sponge??

[Reef Jockey]

Not too sure what this is but I'm wondering if it's black sea sponge? It doesn't grow very much and it has like a felt type feel to it.
Just conerned if not good for the tank or nothing to worry about.

Thanks in advance.

 

[Timfish]

I'm pretty confidant saying it is a sponge. If it's not growing fast it's my guess it's not the cyanobacteriosponge Terpios hoshinota which can be a serious pest, but I want to empjasize that's just a guess. Do a search with that species name on google scholor to find out more. If you want to control it this technique might help:

 

[Reef Jockey]

Appreciate the feedback Tim..

I think your hunch of a black sea sponge is right. The characteristics is not of Terpios Hoshinota. It's not fuzzy and mine is jet black.

this picture is from Sept 10

This one is from today


almost hardly grew any..