I work a detail as a cop at a local hospital, and they have a large display tank in the lobby. I work there once a week and every time i go in there they seem to have different fish. However for the last couple months they have snowflake eel and what looks similar to a singapore angel. I came in tonight and saw they added a red sea regal. The regal and the other angel are absolutely covered in ich. Question is what is the treatment for a tank with an eel? I met the guy who maintains the tank and is the owner of a lfs. Unfortunately the tank is a cylinder tank and runs floor to ceiling, would be a pain getting those out. Hopefully he will do the right thing and try and treat the tank in some way, rather then letting them die.