I also found a new 15 gallon tank, the last time i set it up i was a complete fish noob and knew nothing. I totally overloaded the new tank and the poor fishies all ended up dying. Before that though i filled it with medication (like a newb, i didn't isolate the first fish that came down with something) so the whole tank was soon the color of the medicine . I was wondering if the tank is re-usable, and how i could go about cleaning out all the fungus, ich, and medication that was in it. Oh yeah, the tank has been out of service for about a year now. Any feedback would be great.