Hi. I am new to coral keeping, so I need some help. I know corals need calcium, strontium and other trace elements. I have been using regular instant ocean salt, but I have found that Instant Ocean reef crystals has all of these elements. Can I switch salt brands without it killing my fish. Also, I was planning on getting LPS hard corals and polyps. Can these two different species of corals live together? Finally, how do I acclimate corals? Thanks!