Api bio-chem stars pouch, 20 count

API® BIO-CHEM STARS biological media provides a home for growing massive colonies of nitrifying bacteria to establish and maintain a healthy aquatic ecosystem. The nitrifying bacteria convert harmful ammonia into nitrate. This is called the nitrogen cycle, and it occurs naturally in all underwater environments.Formed under a patented production process with optimal pore size for bacteria growth.Size: 20pcs per pack.Rinse thoroughly to remove any dust.Place BIO-CHEM STARS biological media in the last compartment of your filter.BIO-CHEM STARS biological media will become colonized by bacteria within several weeks.