- Joined
- Oct 10, 2026
- Messages
- 2
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- What state or country do you live in
- Minnesota
Hi! I’ve had copper in my tank for a while now (2.5ppm on Hanna tester) and I’m seeing more and more white spots on many different fish. Despite the concentration being high for many weeks, more spots keep forming. It’s a 75 gallon fowlr tank with sand and live rock. Any advice? The pics show what most of the fish have on them. Thank you.


