Yesterday, I had dinner with a friend at a local restaurant and we ordered fresh seafood platter to start. When it arrive, there was a lot of fresh seaweed garnish on top of the crushed ice in three tier platter. I was wondering if those are safe to use in a refugium or to feed to my voracious tangs. I sure hope they don't use them as a garnish again and I have no problem asking the waiters to wrap them up.