Flourish Phosphorus， 2 L / 67.6 fl. oz.</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Phosphorus supplement for the planted aquarium</li><li>Phosphorus is one of the main three macro nutrients required by plants and can often be the limiting factor to growth in a flourishing system</li><li>A safe solution of potassium phosphate that takes the guess work out of phosphate dosing</li><li>When used as directed Flourish Phosphorus will enhance and accelerate the growth of aquatic plants without enhancing algae growth</li><li>250 milliliters treats 500 to 5000 US gallons</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/41%2B4bZELopL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31Crc%2Bn3czL.jpg' noproxy></br>