Is there a reason why I can't keep a flasher fish alive in chelated copper. I would like to make sure I treat for velvet and afraid to put a fish in my dt that has not had the proper treatment. My dt has 2 weeks left of fallow but not synchronized with my copper in aq since I had a splurge and replaced my dead wrasses with a yellow watchman goby and a cleaner goby. I hope my tang will be ok in copper for 6 weeks total though his appetite just seems to get bigger each week even in copper. love my purple tang