Black sponge? REEF2REEF Saltwater and Reef Aquarium Forum

Black sponges? REEF2REEF Saltwater and Reef Aquarium Forum

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Black sponge? REEF2REEF Saltwater and Reef Aquarium Forum

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Light black sponge REEF2REEF Saltwater and Reef Aquarium Forum

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Black sponge REEF2REEF Saltwater and Reef Aquarium Forum

Black Sponge? REEF2REEF Saltwater and Reef Aquarium Forum