Fluval Biological Enhancer for Aquariums (2 Pack)</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>2 Pack of Fluval Biological Enhancer for Aquariums - 16.9oz Each</li><li>Immediately establishes safe biological aquarium environment</li><li>Powerful responsive ammonia and nitrite elimination</li><li>Prevents fish loss</li><li>Allows immediate introduction of fish， For Fresh and Saltwater Use</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/51SI54EmqfL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31jhm4e0j2L.jpg' noproxy></br>