Specifications: Practical and durable home using product. The bio-sponge inside provide more surface area for growth of beneficial bio-spica bacteria. The bio balls provide biological filtration, removing toxic ammonia and nitrite. Can be reused over and over again until it breaks. Great for fresh or salt water aquarium filtration systems. Item Name: Aquarium Sponge Filter Material: Plastic + Sponge Features: Biological Filtration, Easy to Clean, Working Noiselessly Diameter: 1.6cm/0.63' (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 100 x Aquarium Sponge Filters
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