So I found out a few days ago that my 180 has ich....no fish ever showed signs for the last year or so until I introduced my Dussumieri tang which was quarantined for about 6 weeks and never showed signs of ich at all. So that being said I am completely breaking down my tank and killing the rock and sand. All of the fish are going to be quarantined again, however I am unsure how to best go about quarantining my Checkerboard Wrasse since he buries. He shows no signs of ich currently, but I don't know if I need to use copper in his quarantine since he will need sand. Then sand will come from a fresh bag of dry sand and not the main tank. Any advice would be greatly appreciated. Thanks!