That happens with more corals. But if you have a continuous good alk level but calcium is generally lower you do not want to dose kalk. That would add both alk and calcium. I ended up supplementing my kalk drip with a doser to control alk, calcium and magnesium in different levels. Kalk mix is good if both alk and calcium are depleted equally. But calcium level of kalk mix can be greater if vinegar is used when mixing, but even that will still raise your alk level.