Replenish， 4 L / 1 fl. gal.</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Replenish is a proprietary blend of salts designed to replenish physiologically relevant minerals that are removed by reverse osmosis filtration</li><li>Replenish restores general hardness (GH) using a balanced blend of both soft (sodium potassium) and hard (calcium magnesium) salts</li><li>Restoration of mineral content is essential since a complete lack of minerals will result in osmotic stress</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/41uTQM7vaOL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31QfBTi1EvL.jpg' noproxy></br>