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Aquascape® BioBalls are designed to be lightweight filter media that is easy to clean and maintenance. BioBalls are best used in a media net or strung together and placed in the Biofalls Filter. Bioballs provide a textured surface area (30 square inches per BioBall) for beneficial bacteria to colonize and grow.
Each box of 100 balls has a surface area for biological growth of almost 21 square feet.
Also sold in bulk packs of 1000 BioBalls.