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.