Bare in mind that there is no such thing as 'a bit immune' either you (or your fish!) are immune or you're not... in other words, do this the full hog or not at allWow just got done reading this whole thread.. it's now 3 in the morning here (oops). Thank you for posting so much information on keeping immune tanks.. this thread is so helpful! I'm only planning on stocking 4 fish in my 90 gallon (pair of clowns, yellow eye kole tang, male lyretail anthia) and my lfs quarantines so hopefully i won't have to worry about keeping them completely immune but I will be feeding them live food such as clams and blackworms along with reef frenzy and now after reading this thread, omega 3. As for the seaweed you collect, do you get it from the beach during low tide when that line of sea weed forms on the sand? I was thinking of collecting some of that but I'm not sure. I'm also not sure if I trust the saltwater close to me (I live in Tampa bay and I'm afraid the bay water here is very funky and polluted lol) so I think I'll use artificial salt water. But hopefully I can keep my fish as healthy as you and Paul do!