Capable of moving more water than other sponge filters.


One inch diameter lift tube allows use of power head* without adapters


Raised off bottom, no dead space.


Heavier base.


Easy to clean. Just rinse and squeeze under cool running water.

The Hydro-SpongeTM Filter provides both mechanical and biological filtration. Aerobic bacteria colonize the sponge providing a bacterial substrate to facilitate the nitrogen cycle.

In addition, the Hydro-SpongeTM traps waste particles mechanically cleaning the water without trapping the baby fish.