http://reefcentral.com/forums/showthread.p...threadid=102605
There's a bunch. Randy Holmes Farley is an unbelievable hobbyist resource, almost on par with Chip... not quite though.
Maybe start here???:
http://www.reefkeeping.com/issues/2004-05/rhf/index.php
If you figure any of it out, let me know. I'm just a lowly math teacher and chemistry ain't my thing (neither is language and/or grammar).