🐠 Dive into a cleaner, greener aquarium experience! Enhances biological filtration to break down harmful ammonia and nitrite. Easily removable sponge layer for quick cleaning and consistent performance. Promotes a thriving aquatic environment for your finned friends. Our Bioballs provide an expansive surface area for optimal colonization. Reduces reliance on chemical additives for a healthier ecosystem. 26mm size Porous structure Eco-friendly The VAYINATO® Aquarium Biological Filter Media features 26mm Bioballs designed for superior biological filtration. With a porous structure that supports beneficial bacteria, these Bioballs help maintain crystal-clear water while being easy to clean and eco-friendly. Each package contains 50 Bioballs, making it an essential addition for any aquarium enthusiast.