Getting into the salt discussion could take a while There are so many different opinions on whos salt is better. I don't think there is really that much of a drastic difference between salts but hey that is just another of a million opinions. I think if you order your live rock online you will have much better coraline algae coverage than the lfs
at least that is how it is in my area. I orderd from DR fosters and smith some fiji I was extremely pleased. It didn't look like much at first but the coraline algae is covering most of the rocks I got online and my lfs
rocks have nothing at all on them.