You're welcome, and not to me, it doesn't. I'm wrong according to some people, but when I try for 1300 PPM for example, I want 1300 PPM. Not 1435 after adding some additives or something. So I can't think why the order you put them in would matter. But hey, that's just me (and a bunch of others).

Unless of course the instructions specifically say to reach your normal target PPM, then add a certain amount.