Enhance your aquarium's filtration system with our fish tank filter bio balls. These compact filter balls are ideal for both small and large tanks, providing efficient filtration and improving quality. It can be your good choice. Features -Color:Black -Material:PVC -Size:3.60X3.60X3.60cm/1.41X1.41X1.41in -Fine workmanship: the bio balls work efficiently to maintain clear and transparent in your aquarium, promoting a healthy environment for your fish -Good material: constructed from safe materials, these bio balls no risk to your fish or the overall quality in your tank -Robust material: designed for durability, these bio balls can withstand daily use and cleaning, offering a longterm filtration solution for your aquarium -Simple setup: no complicated installation required; just add the bio balls to your tank and enjoy improved quality with minimal effort -Multipurpose application: ideal for use in fish tanks, ponds, and other aquatic setups, these bio balls provide versatile filtration options for various systems Package list: 200 balls