BACTI-STARS are biological filter media that provide a home for growing massive colonies of nitrifying bacteria. Use BACTI-STARS to establish and maintain a healthy aquatic ecosystem. The pore size is optimal for the growth of beneficial bacteria that remove toxic ammonia and nitrite. These allow for rapid transfer of oxygen and water which keeps bacterial colonies healthy and active.
Place BACTI-STARS in your filter. They will become colonized by nitrifying bacteria in several weeks establishing your aquariums biological filter.