Might want to take a look at hw-Marinemix Reefer Salt found
HERE at BRS. The parameters are close to what you specified and are mixed at 35ppt salinity. I was looking at red sea coral pro for my nuvo fusion 20 that I'm starting, but that 12+dkh has me concerned that I'll burn out any corals I put in there. For that reason, I'm considering the hw-marinemix reefer salt