I've read that a FOWLR should be treated as a reef tank. I've been adding Purple up to my BC 29 to get the corraline algae going. I was wondering when I'm ready to move up to a bigger tank should I go with Instant Ocean reef crystals for the added trace elements that come in it? Can I switch to reef crystals for my next PWC when my regular sea salt (Instant Ocean)runs out? I would like to get some beginner corals in my BC 29. I currently have 2 clowns, a bi color angel(which is a PIA to get to eat), and various snails.