@Humblefish I have recently acquired a new Mimic Tang and against all the advice I read and received I was anxious to add my first fish and did not QT it and is in my DT. Today being day 7 after introduction into DT notice the visible signs (spots, scratching) for Ich and would like to know if TTM is the best option in this scenario provided I can net it? I do have enough water saved from recent water changes circulating through a hob filter in another tank. I also have there alternatives to in tank treatment. Nothing else in the DT but snails. Also if I do transfer method how can I be I be sure that my DT or water that I have been saving doesn't have Ich? Thanks in advance!