Ditto to Doug and Brad regarding mix-and-go (TM).
I dump 3 heaping teaspoons of Kalk into my Kent Aquadose 2.5gal container. Put in a little RO/DI water, and shake up the mix. Then top up the jug with RO/DI water and set the drip rate.
As I am sumpless, milky Kalk drips straight into the tank, near my Hang-on Skimmer so that it is quickly mixed into the tank water by either the skimmer outputs or sucked into the skimmer itself and mixed up.
Never had a problem with pH swings or calcium precipitate.
And I also agree about Kalk maintaining but not raising Calcium levels. I've been dripping Kalk for over a year, and my Calcium levels have actually decreased. I need to use a product like Kent's Turbo Calcium to boost my Calcium levels back up to 350-400ppm (they are at 230ppm now) and then the Kalk will just help maintain the levels. Even with larger Kalk doses, no appreciable increase in Calcium levels has been observed.