Good or bad and what is it?

[Roachbeef19]

Thanks for you time!!!!! Sponge or something I should get rid of? Under the plug of my torch

 

[Roachbeef19]

Another pic

 

[Badnade]

Thanks for you time!!!!! Sponge or something I should get rid of? Under the plug of my torch

Looks like a pineapple sponge. They don't seem to bother anything in my tank other than growing on my GSP.

 

[SHNICI]

pineapple sponges, harmless and completely reef safe filter feeders