Seachem Purigen for Freshwater & Saltwater</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Purigen is a Premium Synthetic Adsorbent</li><li>Controls ammonia， nitrites， and nitrates</li><li>Ultimate Filtration</li><li>Unparalleled Capacity to Remove Organic Waste</li><li>Regenerable</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/51aF4Y%2BD9nL.jpg' noproxy></br>