Biochemical filter cotton is very useful for water filtration of aquariums and fish tanks. It can be used in different filtration scenarios according to your own needs
Biochemical filter cotton is very useful for water filtration of aquariums and fish tanks. It can be used in different filtration scenarios according to your own needs


bacteria The material has great thickness, it is durable Very suitable for using in freshwater and marine water. Can be cut any sizes as your needed. Lightweight & softness design. Excellent water permeability. Cultivate the nitrifying bacteria for biological filtration. Dense shape makes it effective to avoid residue. Can be used again after cleaning 100% brand new & unused Color: black Advise: Replace the bio-sponge three month, to ensure the filtrating effect as well as the growth of the nitrifying bacteria. Note: There may be an error of 0~2cm in manual cuttingļ¼ŒThose who mind should buy with caution. Package include:1x filter biochemical cotton