<a href=showthread.php?s=&postid=11026059#post11026059 target=_blank>Originally posted</a> by Serioussnaps
I prefer boyd's chemi pure as well over regular carbon, however, for the money and the lack of need to run it lately I just run el cheapo black diamond but I belive chemipure regular is better.
ELITE has GFO in it....
GFO-granular ferric/ferrous oxide/hydroxide
GFO-phosphate remover
If you already run a GFO then the "elite version" is not needed.