<a href=showthread.php?s=&postid=9961385#post9961385 target=_blank>Originally posted</a> by matttaylor
http://www.sierrachemicalcompany.com/
They are in West Sac and i know a LFS used to get their calcium and other chemicals (including carbon) from them. You may want to call them for pricing.
<a href=showthread.php?s=&postid=9963028#post9963028 target=_blank>Originally posted</a> by Reefugee
Mike - are you sure it's not ferric oxide that you want? According to this thread, you want Fe2O3. This would be ferric oxide. For those who are interested, Ferric Oxide is basically what Phosban is made out of.
Edit: Just called them and they don't carry Ferric Oxide or Ferric Hydroxide.