Dual Bio Sponge Filter PK-004. L(FR15)

With a super air lift system,the bio-filter has excellent effect on dissolving oxygen in the water and working silently.physical filtration combining with biochemical filtration,the multi-layers sponge filter suports the breeding of danse nitrobacteria,which will break down harmful waste,and will give a clean living environment for your fish.They are suitable for view fishes and especially useful for breeding small fishes.