I used to be a fan of Aquavitro Salinity salt, but their decision to only sell it brick and mortar really was a pain as LFS within in reasonable driving distance disappeared, managed to find random guy Steve in Daly City via craigslist (well others told me) and he had it, then I think he closed up shop (his garage) and that was it of that. With the 200g tank I decided to do Red Sea blue bucket, for no reason other than it seemed like a good looking salt

Seems to work fine, I don't do many water changes though, probably should though.