Ista Bio Sponge Rectangle Bio Foam Small

Ista - Bio Sponge Rectangle Small. (Small rectangle shapped bio-sponge) Mechanical filtration: Provides excellent filtering effect while oxygenating the water. Biological filtration: Foam material supports the colonization of bacteria. Can be used with either an air pump or any external filter. Silent operation by reducing air pump noise. Easy to install and simple to maitain. Small