Sorry, don't know the product . Sounds like it's calcium chloride and carbonate for alkalinity(C03) which is the form that raises ph vs( HCO3)bicaorbante which does not and may lower it a very small amount.. How much you use depends upon what your calcium and alkalinity levels are now and what you wan't them to be . Do not dose them at the same time. Dose the alkalinity part slowly in an area of high flow and try not to raise alkalinity by more than 1 dkh per day .
Ok. I looked it up on their site. It is soda ash(carbonate) for alkalinity and calcium chloride for calcium as I thought.Again , I would see what levels are now and use the reef calculator linked to figure how much you want to raise them if any. Recommended range for calcium is around 380ppm to 450ppm; for alk it's 7 to 11dkh or 2.5 meq/l to 4.0 meq/l; for magnesium it's 1300ppm to 1400ppm or so. The magnesium should be 5parts magnesium chloride and 3 parts magnesium sulfate.The ratio of chloride to sulfate in nsw is 7 to 1 but you are only dosing 5 to 3 because you will already be adding chloride via the calcium chloride.
This calculator can help
http://home.comcast.net/~jdieck1/chem_calc3.html
It's not as hard as it sounds once you know what your current levels are. It's also worth noting what your salt mix contains in terms of calcium/alkalinity and magnesium.You can find most of them here:
http://www.reefcentral.com/forums/showthread.php?t=1714505