Chemi-Pure Elite filter media blend targets phosphates and silicates as well as other dissolved organics to assist in the control of nuisance algae. By combining GFO (granular Ferric Oxide) with Boyd’s premium pelletized carbon and placing these inside of a fine-mesh nylon media bag, Chemi-Pure Elite delivers a convenient and effective way to polish your water of odors and toxins while rapidly removing phosphates and silicates that can lead to excess algae growth. Along with proper feeding and a regular water change schedule, Chemi-Pure Elite can greatly simplify maintenance, contribute to system stability, and improve the overall appearance of your aquarium.