I used to add kalkwasser using a dosing pump and a 3 gallon jug, I would just mix the kalk with RODI water and hook it up to my dosing pump and it would dose only the saturated water and never any of the kalk that settles on the bottom. I also dosed Calcium and Alk. With the setup im about to launch, I have a Kalk Reactor, and I will be using my triple doser to add Kalk, Alk and Mag.