kris I highly recommend that youy read ALL of the articles in the reef chemistry forum... as reeferMac said
for a quickie ... like putter said test you alk if its low just dose alk till your ca comes down. If it is normal wait it out either way I'd wait until it comes down naturally.
CA being high is not really to much of a problem just note that you are on the edge of precipitating the bicarb and calc and forming raw calcium carbonate (which in lamans means youve got about 3 to 4 hours of scraping the tank and cleaning your pumps)
and behold my chemistry bible
http://archive.reefcentral.com/forum...hreadid=102605
Id bookmark this as well as the calculator that he offers in his links
Good luck Kris ... man have you come along way sence the first couple of visits in the store
Brian