The NSF International-certified Ecoflo Coco Filter from Premier Tech Aqua is designed to fully protect ecosystems using a natural coco husk fragment-based filtering media that biologically treats pollutants and acts as a barrier to retain solids. The choice of natural organic filtering media allows for recycling of the spent filtering media to produce renewable energy or compost for soil amendment. With a filtering media capable of sustaining a 40 percent increase of treatment capacity, it offers a large, compact filtering media surface and uses no energy to treat wastewater. 800/632-6356; www.premiertechaqua.com.