Maximize biological filtration in large pond and water feature systems with this 3.5 cubic foot supply of bio-balls, containing approximately 2,300 high-surface-area media pieces. Designed to support beneficial bacteria growth, these bio-balls help break down waste and maintain balanced, clear water. Ideal for high-capacity filters, waterfall units, and custom biofiltration setups, they deliver reliable, long-term performance for demanding pond environments.






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