Practical and durable home using product. BIO-Balls do not require replacement unless damaged or destroyed The bio balls provide biological filtration, removing toxic ammonia and nitrite. Can be reused over and over again until it breaks. In the event of excessive buildup, you may gently rinse with water from an established aquarium, if desired. Help to improve the water quality.
Material: Bio Balls Color: multi colors Quantity: 100g/250g/500g bio balls + 1 mesh bag (100g bio balls doesn't include mesh bag)
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