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Safe for fresh & salt water aquariums. 100% polyester filtering fiber. Ideal mechanical and biological filtering media for all freshwater saltwater tanks..
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![Polyester Filter Fiber (4 OZ) [006419]](http://everydaysupplyco.com/cdn/shop/files/image_b63bd865-db61-41b0-965f-9d084d421e00.jpg?v=1757376397&width=1024)
![Polyester Filter Fiber (4 OZ) [006419]](http://everydaysupplyco.com/cdn/shop/files/image_b63bd865-db61-41b0-965f-9d084d421e00_1024x.jpg?v=1757376397)