Who Gives A Fish Forums

no the op...

Sorry to bother, might get some grief about this, but have you considered using SeaChem Prime? It's in my sig, just a thought, good luck with the tank.

Are your LEDs dimmable, by any chance? Too much light could be the culprit. LEDs tend to focus light intensely, like a magnifying glass, whereas traditional bulbs spread it out more. I've seen it happen to a lot of people - they switch to LEDs and end up over-lighting their tank, which can be ...

I'm thinking a nipping fish might be the culprit, but it's weird since your fish have been in there for years and haven't bothered anything before. That high alkalinity isn't necessarily a problem if it's stable, though. I'm more concerned about the zero phosphate reading - that could be an issue ...

It all comes down to how you define pain, as you touched on with that subjectiveness comment. I was reading through some other posts on the same topic and I thought I'd share these two - might give us a better idea of what's going on.

http/www.fishforums.net/index.php?s=&amp...t&p=1709172
http/www ...

First thought, war coral. Others, I agree, likely Favia.