Okay, since no one seems to want to give numbers...this is my routine (about to change as I just switched to turbocalcium--the powder stuff from liquid calcium): (and if you use this routine, and it kills everything you own, it's not my fault--for the record I do test calcium every couple weeks--more often now that i'm switching to turbo calcium--this schedule keeps me right around 450 all the time).
For a 50 gallon tank (with a 20 gal sump) so Tim you and I probably have nearly the same volume of water, you have a little more, but your coral/invert load using it up is lower...
Calcium--1 capful daily
Microvert--1 capful Wednesday and Sunday
Weekly 5 gal water change
-or-
Strontium/Molybdenum--1capful on Sunday
Essential Elements--1 capful on Sunday
Iodine--1 capful on Sunday
That's it. Been working good for me so far. Got corraline growing on the glass and powerheads which I figure is pretty good for a tank started in January.
-leigh