Cobalt Aquatics Total Freshwater Aquarium Organic Removing & Ion Exchange Resin makes it easier than ever to keep your swimming sidekicks’ home healthy and tidy. This freshwater tank cleaner is a broad-spectrum water purification media with Total Organics, Total Nitrate and Total Softener. The all-in-one blend is a stand-alone chemical filtration system to simplify your cleaning methods! It removes colors, odors, ammonium, nitrite, nitrate, phosphate and metals. And, when exhausted, Cobalt Aquatics Total Freshwater Aquarium Organic Removing & Ion Exchange Resin will not release the collected pollutants back into the water.