Aquascape UltraKlean BioBalls - 250 pk

Aquascape UltraKlean BioBalls are a remarkably efficient filter media designed for use with UltraKlean biological pressure filters. A superior alternative to traditional filter sponges, they feature a distinctive shape that's designed to capture waterborne dirt and debris. Their textured surface provides an ideal cultivation site for beneficial bacteria, and they won't clump together like conventional bio balls.