MatrixCarbon， 4 L / 1 gal.</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Spherical Bead Shape For Optimum Hydrodynamics That Will Not Pack Like Competing Products</li><li>Permits Maximum Water Flow And Contact With Is High Density Of Macroporous Binding Sites</li><li>MatrixCarbon has a very low ash content as indicated by its minimal impact on pH; even when added to distilled water it does not raise above a ph of 7</li><li>Outperforms Other High Grade Carbons By At Least Two Fold When Compared For Total Capacity To Remove Organic Matter， Rate Of Adsorption， And Duration</li><li>250 Milliliters Treats 100 Us Gallons For Several Months</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/51BSLWIqtEL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31sdkh1fxmL.jpg' noproxy></br>