Just in case any folks here haven't see this on the various forums:
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1184013
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1211410
http://www.reefcentral.com/forums/showthread.php?threadid=1206262
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1184013
http://www.reefcentral.com/forums/showthread.php?s=&threadid=1211410
http://www.reefcentral.com/forums/showthread.php?threadid=1206262