djfrankie
In Memoriam
<a href=showthread.php?s=&postid=12198276#post12198276 target=_blank>Originally posted</a> by Red_Six
I thought GFO (granular ferric oxide) was for binding phosphates. I have never heard that it binds sulfates. Could you point a link to this information please?
Robert
Well, it can be used for both. In our case we can kill two birds at once.
BTW, here's the link:
http://reefkeeping.com/issues/2005-12/rhf/index.php
HTH,
djfrankie