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. Your fish will produce waste, which fuels the growth of the beneficial bacteria that will comprise your “biological filter”. These bacteria continue to grow as your aquarium ages – living on the top layers of the aquarium gravel, or in filter media such as API BIO-CHEM STARS biological media.

Formed under a patented production process that creates a 50-70 micron internal pore network. This pore size is optimal for the growth of beneficial, nitrifying bacteria that remove toxic ammonia and nitrite. Space-age porous polymer allows for rapid transfer of oxygen and water which keeps bacterial colonies healthy and active. Due to their design, API BIO-CHEM STARS biological media achieve 4 times more surface area to colonize bacteria than ceramic rings.

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.