A friend of mine owns a couple of LFS and asked if I would experiment with 'Salinity' before it hit the market...took a few months before it was perfected and I had a journal on the initial findings.
Then BINGO, all parameters measured up as the kinks were worked out. I have never switched salt since. I'm not saying it's the 'Salinity', but do say my coral seems to do very well with it.