I have a Mixed Reef tank (Softies, LPS and now a good stocking of SPS) and as long as I stay on top of my weekly water changes (every other week at the least) I've not had to dose for anything in 2 years. This system works for me and my tanks but may or may NOT work for other tanks. I suspect when I start moving more into SPS dominated tank I'll need to watch and modify my Calc but until it's needed this tank gets no supplements.
One more thing, OMG, the chem forum is not in the Red Sea Max Owners Forum!!!!!!!!!
RSM forum is a place we have come to know one another ... and are more familiar with each others tanks ... and sometimes this is the best place to get a good idea/suggestion of others with the exact same setup as you..... Human nature, People grow together and bond .... share experiences and help each other out chem forum or not .. he has a red sea max so he is in the right place anyway.
I use Microbe Lift All In One, according to the guys in the LFS its pretty good, and my Xenia, Xoas and Shrooms are going pretty good, so well I'm starting to give colonies away. Saying that I religiously carry out my water changes so not sure if its needed, and I'm guessing that these are pretty easy corals to keep as well.