TetraPond Algae Control Pond Block， 50-Count Jar<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Tetra pond block bulk 50ct</li><li>Pond blocks are a convenient way to control algae in ornamental fish ponds</li><li>Easy solution to keep nuisance algae growth under control</li><li>Clear cloudy water and remove algae from water features and fountains</li><li>NOT recommended for ponds or water gardens with live plants</li></ul></div><img src="http://ecx.images-amazon.com/images/I/511MDuxj1-L.jpg" noproxy>