I don't think many people have used it, when I looked it up I got very few responces too.
I did buy a bucket and here is what I found, CA is high, I don't remember the exact numbers but it was somewhere in the 460 range.
Alk is low, once again I don't remember exact numbers but it was down around upper 5 or lower 6 DKH.
Everything else I tested came out good, but the above two numbers made the salt a pain to mix. I used the bucket and all my coral did well on it, but when I was done with the bucket I happily went back to Instant Ocean.
Coralife salt does mix quick, it is the fixing of the ALK and CA that made it anoying.
Whiskey