the first question needing to be asked is what size tank do you own? i can tell you from my 10 gal nano experience that i must add buffer every single day in order for it to keep stable. you may want to look into a kalk wasser drip(something i hope to soon gets some plans made for; and if i do you're more than welcome to check them out)

hope it helps, steve

ps if you have a larger tank i have no clue as to how to deal with it(i specialize in the small reefs ) you'll definitely want to talk to tim or jim since they seem to have the largest setups and quite a bit of experience.