Jungle TB640W Tank Buddies Correct pH Tablets， 8-Count</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Holds it for several weeks</li><li>Also prevents stress in fish from sudden pH changes， promotes favorable conditions for tropical fish and live plants</li><li>Helps lower harmful ammonia levels</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/51wVI5b6GVL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31J1dgjpQaL.jpg' noproxy></br>