- Joined
- Feb 20, 2023
- Messages
- 3
- Reaction score
- 1
- Location
- metro detroit
- What state or country do you live in
- Michigan
I want to start off by saying i currently do NOT have any shark or Stingrays in my system but i was wondering is even small traces of copper deadly to sharks and rays? I’m currently getting a reading of 30ppb or .03ppm of copper in my system.


