DI RESIN WITH COLOR CHANGING INDICATOR， REEF AQUARIUM GRADE</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>COLOR CHANGING FROM PURPLE TO BROWN WHEN EXHAUSTED</li><li>VACUUM SEALED IN MYLAR BAGS TO PRESERVE FRESHNESS AND SHELFLIFE</li><li>ONE POUCH FILLS STANDARD SIZE 10" DI CARTRIDGE PACKED TIGHT</li><li>HIGHEST QUALITY VIRGIN NUCLEAR GRADE MIXED BED RESINS FOR ZERO TDS</li><li>SPECIFICALLY PACKAGED AND DISTRIBUTED FOR AQUARIUM 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/41yWPCjCdJL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31bldKwZldL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41drds33XgL.jpg' noproxy></br>