once a fish is in my DT I don't remove unless I really have to I will take a fish out and dip in freshwater and formalin not coppermine. I do not use coppermine as the toxicity is to much for most sick fish to handle in the first place and you are not suppose to treat tangs or angle fish with copper as it kills the bacteria in their stomachs. Then they can not digest food properly, got that from marine biologist. You see it helps to read allot and I mean allot. My oldest daughter is a reader also she reads 3 or 4 book a day given the opportunity. She has learned that knowledge is a strength and can make things easer in the long run. Keep Reading posts from a decade ago to present and you will find that there are allot of common factors out there these are the thing to look deeper into for what you are seeking an answer for.

Bill