I am going to set up a qt tank, What is the best approch i have a 10 and a 30 gal tank available for this, and a haing off back type filter, i was thinking that maby i should treat the tank with copper solfide(i beleve that that is the correct term) so the fish will get a treatment before any symptioms appear. is this a good idea , also i have been reading about giving the fish a fresh water bath before putting them in the qt tank, i am unclear as to benifits vs stress to the fish this would cause. any advice ?