This is not right
Kalk add alklinity and calcium at the exact same rate than a calcium reactor 1 meq/L alkalinity for 20 ppm calcium no more no less
Here a direct quote from advance aquarist magazine I gave the link upper
Quote:
There are many ways to add calcium and alkalinity to reef tanks in ways that are balanced with output. These include limewater (kalkwasser)8 regardless of how it is dosed, calcium carbonate/carbon dioxide reactors, the two-part calcium and alkalinity additives (e.g., B-ionic, C-balance, Kent Tech CB, etc.), and a small selection of one-part additives, such as calcium acetate. I strongly recommend that you adopt on of these in your tank maintenance routine, and then never add any other calcium or alkalinity sources unless you are certain of what you need.
If you choose to add limewater, but find that using saturated limewater to replace all evaporated water does not quite keep up with calcification demand9, you can stretch the capacity of limewater by adding vinegar to the solution to enhance the solubility of the calcium hydroxide10.
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Here it is again
http://www.advancedaquarist.com/issues/nov2002/chem.htm
and if you not shure ask randy holme on the chemestry forum he will tell you