I have used the Aquaforest reef salt for over two years and have had good results. I was going to run the probiotic salt and was convened to say with the reef salt for costs and simplicity. I have found that my tank runs so much better keeping it simple in stead of messing with everything.
i'm half way through my first batch and so far i'm not pleased with the low alk.. it measures 7.3 ish out of the box at full strength mix of 1.025.. The paper that came with it says 7.5 so it's close but just means i'm constantly fighting my dosing pump with water changes.. thinking about going back to red sea..