Lee's Small Bio Pin Balls are state-of-the-art filter media designed for use in both freshwater and saltwater wet/dry filtration systems. These innovative balls are engineered to provide superior biological filtration, effectively breaking down toxic ammonia into less harmful nitrates, which is crucial for maintaining a healthy aquatic environment. They also play a vital role in enhancing the gas-exchange process within your filter. Each Bio Pin Ball features 110 individual drip points, or "Bio-Pins," which significantly increase the surface area available for beneficial nitrifying bacteria. These balls can be connected together for structured placement or simply placed randomly within your filter box. The unique void space between the Bio-Pins is optimized for the free movement of gasses like oxygen, ensuring it readily contacts the bacterial colonies. With approximately 130 square feet of surface area per cubic foot of media, and a suggested usage of one gallon of Bio Pin Balls per 20 gallons of saltwater, they offer efficient filtration. This product is ideal for reef aquarium hobbyists and anyone seeking to optimize their wet/dry filtration system for robust biological purification and improved water quality. By fostering a thriving environment for nitrifying bacteria and promoting efficient gas exchange, Lee's Small Bio Pin Balls contribute to a more stable and less stressful habitat for your aquatic inhabitants, making them an essential component for a successful and healthy aquarium.