Except for buffer sometimes, all I do is water changes with the new Red Sea Coral Pro Salt. I had switched from Kent a few months ago. If I had a full blown SPS tank I know I would have to dose, but with a mixture of Xenia, Frogspawn, Candy Cane, Wesophyia, Mushrooms, GSP's, Slimmer, Montipora I haven't found the need to dose anything. If growth slows down a little I just do a larger than normal water change. Sometimes I believe simpler is better.