Reef Carbonate， 2 L / 67.6 fl. oz.</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Raises carbonate alkalinity in the reef aquarium</li><li>A concentrated optimized blend of carbonate and bicarbonate salts designed to restore and maintain alkalinity in the reef aquarium</li><li>Calcium and carbonates are essential to all coral growth; If either become deficient coral growth will cease followed by rapid decline in coral health</li><li>Used as directed， it will not deplete magnesium or strontium which usually tend to precipitate with increasing alkalinity</li><li>250 milliliters treats 1000 gallons</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/41SAvURKeuL.jpg' noproxy></br>