Black sponge REEF2REEF Saltwater and Reef Aquarium Forum

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

Black algae??? Need help! REEF2REEF Saltwater and Reef Aquarium Forum

Sponge removal on Elegance Coral REEF2REEF Saltwater and Reef Aquarium Forum

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

Zoanthids. Black squishy/spongy stuff around heads

What is this black hitchhikera sponge? REEF2REEF Saltwater and Reef Aquarium Forum

Yellow round sponge REEF2REEF Saltwater and Reef Aquarium Forum

Sponges of our Tank REEF2REEF Saltwater and Reef Aquarium Forum

Is this a sponge on my Acan? REEF2REEF Saltwater and Reef Aquarium Forum

Black sponge REEF2REEF Saltwater and Reef Aquarium Forum

Black Sponge? REEF2REEF Saltwater and Reef Aquarium Forum

Dreaded Black Bugs or Ostracod REEF2REEF Saltwater and Reef Aquarium Forum

Is this a sponge, or worse? REEF2REEF Saltwater and Reef Aquarium Forum

Sponges of our Tank REEF2REEF Saltwater and Reef Aquarium Forum

Black Encrusting sponge ID REEF2REEF Saltwater and Reef Aquarium Forum

Sponge? REEF2REEF Saltwater and Reef Aquarium Forum