Double Sponge filters are the safest type of filtration you can use in a shrimp aquarium while still providing exceptional bacterial and mechanical filtration. Aerobic bacteria colonize the sponge providing a bacterial substance to facilitate the nitrogen cycle.
Sponge filters are powered by an air pump(sold separately) making them very cost effective because you can run multiple sponge filters off one air pump. In addition to the great savings, the sponges themselves create an area for shrimp to graze on and seek shelter.
Another key advantage a sponge filter has is the gas exchange it facilitates with the release of the air bubbles. As the bubbles released from the sponge filter rise to the surface and agitate the surface, aeration occurs, allowing oxygen to enter the aquarium, aiding and benefiting shrimp tremendously.
At a glance:
Sponge filters provide both mechanical and biological filtration
Provides the ideal location for bacterial colonization
Does not trap ornamental shrimp
Recommended Tank Size: up to 10 Gallons