I just received a new cannister filter from a friend who had been using it his saltwater tank, and then had it stored in a garage for a while. Needless to say it's pretty dirty, and even if it weren't dirty just from sitting, I would like to use it in my freshwater tank and am a little hesistant. WHat is the best way to clean all the parts? I kind of wondering about running it through the dishwasher without any soap or anything just to get all the junk off of it. Any thoughts? Thanks