I was wondering if anyone could help with this problem. My Angels are suffering from something I thought to be a fungal or bacterial problem. They are huddled together at the top of the tank, tipped nose-up, and seem listless. They are also covered with a whitish film which will flake off and float around the tank, and aren't eating a lot. I treated the recommended dosage for quick cure to get rid of it and after three days my black angel looks better but my other 2 are starting to get it too. Would the medicine have kept my other fish from getting sick? I also read on the internet about a Angel "Plague" which describes the same symptoms? Plus it only seems to be affecting the Angelfish so far. Anyone had any experience with this?