Sorry about your fish. I only know about the meds because I have a Pinktail Trigger that breaks out with ich whenever I add a new fish, move decor around, or just generally look in the direction of the tank. I also keep about 2-3 ppm
of copper in the tank as a preventative (another lfs
owner recommendation). I'm doing that just until I'm done adding livestock (which should be in two more fish).