Black Unit 20，000 - 30，000 Gallons<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Ideal for Commercial size Pools: 20，000-35，000 gals.</li><li>Great for Hot and Humid climates</li><li>Eliminates ALL types of Algae and Bacteria</li><li>Reduces chemicals by at least 50%</li><li>Natural， Clean， Healthy Water</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51Dd2stRGqL.jpg" noproxy>