a good read... Randy's articles are some of my favorites
http://www.reefkeeping.com/issues/2004-05/rhf/index.php
http://www.reefkeeping.com/issues/2002-04/rhf/feature/index.php
and a good vid
http://www.reefkeeping.com/issues/2004-05/rhf/index.php
http://www.reefkeeping.com/issues/2002-04/rhf/feature/index.php
and a good vid