Continuum Aquatics Reef Sculpture Part B Liquid， 2-Liter</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Proper control of calcium level is imperative for the health and growth of corals and many other invertebrates</li><li>If the calcium concentration is too low， growth rates will suffer</li><li>Continuum recommends that you maintain a calcium level of between 410 and 450 mg/L (ppm)</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/31PobBd62ML.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31c8fzXcnIL.jpg' noproxy></br>