Nature's Ocean Premium Aragonite Reactor Media for Aquarium， 1-Gallon</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Reduces Consumption of CO2</li><li>Perfect for all types of Calcium Reactors</li><li>Safe for Reefs</li><li>100% All Natural – From The Ocean To You</li><li>No Phosphates or Silicates</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/516mZPwu9eL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/312KZ2I17AL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/517M2TwqvuL.jpg' noproxy></br>