I have a tsn (3 inches or so) that I'd like to move into another tank. Problem, this task was treated with copper safe for an anchor worm infestation about a month ago (big fancy goldfish, 45 gallon). This is currently the best choice of my tanks in the next phase of grow out for this little guy. He's way too small to harm the goldfish, and the goldfish is too slow to bother him atm. Are small amounts of copper residue going to be harmful to this little guy?




