I'm looking into getting a calcium reactor. One of the things the guy at my LFS said was that although they are great, you will still need to add calcium manually every now and then. I said, can't you just crank up the calcium reactor to output the amount you need, and he said no it can only do so much blah blah. So I guess I'm wondering first of all, does this make sense? And if so, what exactly are the benefits of a calcium reactor if you still need to manually add calcium every now and then?