I thought I was using Oceanic (that's what I said at the meeting last weekend) but I just checked my big bucket and it says Coralife on it... sorry but in the last few weeks I've read so many names/brands of various equipment so I got confused...
Now on the question. I've been using the _Coralife_ scientific grade salt since I started (about 7 weeks ago) and my calcium is always 500+, magnesium is always 1400+. I have just added some corals though, so keep that in mind. All in all it mixes well and if you keep it dry there is nothing visible in the water after it was mixed for 15 or so mins.