I started out with a bucket of intant ocean then a second my tank was a fowlr
then and I had purple coraline everywhere, then oceanic had a new salt mix I used 7 buckets by this time I had a mixed reef and no coraline after the switch, next seachem came out with the reefsalt after 3 buckets tank looked the same as it has for several years, I needed to do a water change for some reason and didn't have enough reefsalt to make it and oceanic was available at my local fish store so I bought a bucket and after 2 weeks my sps
had grown over 1/4" and colored up greatly, I don't dose my tank and have not changed any lighting or anything that might explain the change, needless to say I am back with oceanic. I have 4 other tanks and the reefsalt is the favorite of my macro/seahorse tank. So I guess it does depend on the tank itself, try different mixes until you find the right one for yours.