Features: Material: PVC Diameter of bio ball: 16mm Practical and durable home using product The bio balls provide biological filtration, removing toxic ammonia and nitrite. BIO-Balls do not require replacement unless damaged or destroyed Each filter media is pre-packed in its own mesh media bag. Can be reused over and over again until it breaks Great for fresh or saltwater aquarium filtration systems. In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired The bio-sponge inside provide more surface area for growth of beneficial Bio-Spira bacteria Please allow 1-3cm differences due to manual measurement The real color may be slightly different from the photo, due to a variety of factors such as computer screen contrast or light. Package inculded: 1 Pack of Bio Balls(100*Bio Balls)
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