Biological Filter Foam Sponge for Aquarium Pond Water Filtration System Fish Tank Cleaning Pad

White:Description: Brand New and high quality. Excellent water permeability. Can be used again after cleaning. Can be cut any sizes as your needed. Suitable for using in freshwater and marine water. Cultivate the nitrifying for biological filtration. Offers good biochemical and physical filtration effects. It is suitable for tank and pond filtration. Mainly used for physical filtration and biochemical filtration. Specification: Material: Cotton Size: Approx. 88x30x2cm/34.65x11.81x0.79inch Hole: Middle Hole Package Includes: 1Pcs Filter Sponge Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the the size above. Due to the lighting effects, monitor settings,etc.There could be some slight difference in the color of the pictures and the actual item. Green:Description: Brand New and high quality. Excellent water permeability. Can be used again after cleaning. Can be cut any sizes as your Suitable for using in freshwater and marine water. Cultivate the nitrifying bacteria for filtration. Offers good biochemical and physical filtration effects. It is suitable for fish tank and fish pond filtration. Mainly used for physical filtration and biochemical filtration. Specification: Material: Cotton Size: Approx. 88x30x2cm/34.65x11.81x0.79inch Hole: Middle Hole Package Includes: 1Pcs Filter Sponge Note: Since the size is measured by hand, the size of the actual item could be slightly different from the the size Due to the lighting effects, monitor settings,etc.There could be some slight difference in the color of the pictures and the actual item. Blue:Description: Brand New and high quality. Excellent water permeability. Can be used again after cleaning. Can be cut any sizes as your needed. Suitable for using in freshwater and marine water. Cultivate the nitrifying bacteria for biological filtration. Offers good biochemical and physical filtration effects. It is suitable for fish tank and fish pond filtration. Mainly used for physical filtration and biochemical filtration. Specification: Material: Cotton Size: Approx. 88x30x2cm/34.65x11.81x0.79inch Hole: Middle Hole Package Includes: 1Pcs Filter Sponge Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the the size above. Due to the lighting effects, monitor settings,etc.There could be some slight difference in the color tone of the pictures and the actual item.