EasyPro Bio-Balls - 3.5 cubic ft.

These plastic Bio-Balls are a great media for use in all types of filters. Approximately 350 sq. ft. of surface area per a cubic foot.

• Can be used as a loose media or put in mesh bags for easy removal and cleaning
• Will not compact like other soft media, reduces channeling of water around media
• 1-1/2″ in diameter, black in color