Nothing in particular. I was just sitting around wondering. Last week I was discussing with someone ChemiPure, which - when I had my previous tank - wiped out all of my SPSs in less than 12 hours. There was another MRer who had the same results after dosing his tank with it. But everyone else swears ChemiPure has been safe for their tanks. MelaFix is one of the most popular tank medicines and I wondered what people's experience with it was.
The other thing was that I had a pair of Clowns in my QT tank (aquacultured Clowns, mind you) and I could not get them to eat anything for days. They turned their noses at everything. So I got MelaFix and dosed the QT tank. After one dose - they started eating. Coincidence? Perhaps...