Bio-BallsA compact polyethylene media. Select either 98 sq.ft. (CBB15) or 160 sq.ft. (CBB1) of surface area per cu.ft*. Round shape with positive buoyancy. These spheres, with their small void spaces, are popular for clean water applications like tropical fish aquariums. *Sold by the cubic foot. One cubic ft equals approximately 7.5 gallons. |
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