Black sponge REEF2REEF Saltwater and Reef Aquarium Forum

I have this black sponge that hitchhiked onto my rock. Should I keep it?

sponges. Too many? What eats them? REEF2REEF Saltwater and Reef Aquarium Forum

Black sponge REEF2REEF Saltwater and Reef Aquarium Forum

Sponge ID? Are they an issue? REEF2REEF Saltwater and Reef Aquarium Forum

Help with Sponge overtaking frags REEF2REEF Saltwater and Reef Aquarium Forum

Guess that sea star! REEF2REEF Saltwater and Reef Aquarium Forum

Is this a sponge? REEF2REEF Saltwater and Reef Aquarium Forum

Sponge removal on Elegance Coral REEF2REEF Saltwater and Reef Aquarium Forum

What is this. A sponge hitchhiker??? REEF2REEF Saltwater and Reef Aquarium Forum

Sponge and Sea squirt and mystery softie question

Black algae? Or black sponge? REEF2REEF Saltwater and Reef Aquarium Forum