I'm on week 3 of hyposalinity on my display. My yellow longnose butterfly started looking rough last week so I pulled it and returned it to normal salinity over the course of a few days. It looks great now but I'm still concerned about ich possibly being present so it will be run though TTM at some point before it joins the others. I also had a pyramid butterfly that was doing incredibly well for the past few months suddenly die yesterday. It ate voraciously the day before and then I came home to it swimming upside down and in circles yesterday. Is this probably just a coincidence or are butterflies sensitive to hyposalinity?