BAH. The salt is good, but when the tank matures you end up dosing anyways. I just use Instant Ocean, and dose whats needed, when needed.
But Red Sea is a good test kit. I use API for the norms, like Nitrates, ALK, CAL and Phosphates, with phosphate test kit, I just have Softies, and if the test color doesn't change at all when I add the part 2, Im good. Then salifert for MAG.