I second what Jim said. We all say the same thing really. Never dose what you don't test for. Most salts that you purchase are engineered for aquariums, so most of the trace elements found in aquariums are at higher concentrations than found in NSW.

If you dose, use B-Ionic. You can also use their Mg if you test for it. Other than that, Zeo products or Elos, as both of those are more geared for higher demand SPS systems using a nutrient poor environment as the basis for their strategies.

I tell everyone this....
KEEP A LOG

Everyday, write down your CA and Alk. Mg if you have the test. This way you can get a baseline for how much your system depletes daily. Dose based on your tanks intake.