everyone ends up having a favorite salt but i found that unless you are doing carbon dosing or one of the systems you dont really notice much different between salt brands. I have tried tm, brightwell, rc, io, oceanic, red sea regular, red sea pro coral, seachem reefsalt, have not really noticed much difference in livestock. Im currently using instant ocean to support a few sps and it does fine for me. I was still using io when the tank was full of sps and had 2 clams, had to dose everyday but most likely would have to dose with any brand of salt. It might also matter than i mix to 1.026 but io comes out to: 440-460 calcium, 8.5 dkh alk, magnesium north of 1300