NPK Industries Raw Calcium/Magnesium Fertilizers， 8-Ounce<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Soluble plant supplement that is used for horticultural purposes</li><li>Contains 15% calcium and 3% magnesium</li><li>Optimum ratio of fully water soluble calcium and magnesium</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41wjxq6LQ4L.jpg" noproxy>