I think you are fine with a trace mix as long as you are doing regular water changes to prevent buildup. There are test kits for copper, however I really dont see the need in my area, but again everyones water is different...^iMp^ said:What level of copper should be avoided? I mean, I'm cautious when I dose my trace mix because I'm afraid of killing off all my shrimp. Is this being too cautious?
^iMp^