Chemi-pure Elite is activated carbon and granular ferric oxide(GFO
). That being said, it will do more than only carbon, but for the price you are better off buying a high quality carbon such as BRS ROX 0.8 and GFO
seperately. Also, I'm not sure anyone knows what quality carbon is used in the Chemi-pure. There is a huge different in carbons. If bought seperately you can also change each one when necessary. If you have a high phosphate level the GFO
can exhaust faster then the carbon.