And yes Kalk with magnesium additions now and then will grow corals. I think over that time I also did some manual dosing of the big three from time to time but mostly the Kalk did the work. Eventually with lots of stony coral you would outgrow Kalk. To be honest depending on tank size and ambitions dosing is probably the way to go these days. I would say you are on the right path. I went old school on my new rig with a calcium reactor and am trying for a set it and forget setup. It may still incorporate a Kalk stirrer, not sure yet. Eventually I am going to scale up to a big tank. We will see how it does.
