<a href=showthread.php?s=&postid=10116906#post10116906 target=_blank>Originally posted</a> by inwall75
Seachem Matrix is an awesome carbon yet somewhat more expensive. It is purposely shaped in such a way so that channeling in minimized. (i.e., where some water is able to bypass the carbon entirely). The description for Renew doesn't interest me at all.
<a href=showthread.php?s=&postid=10122162#post10122162 target=_blank>Originally posted</a> by DARKSILENTTYPE
Korallen-Zucht carbon
KZ Carbon for short