Good permeability, easy to clean. Increase oxygen solubility. Provides biological filtration to aquarium, contributes to stable water quality. Biochemical sponge filter. Adheres smooth surface with suction cup.
Good permeability, easy to clean. Increase oxygen solubility. Provides biological filtration to aquarium, contributes to stable water quality. Biochemical sponge filter. Adheres smooth surface with suction cup.