I've treated with Coppersafe to 1.77 ppm (per Hanna tester) and will raise to 2.0 tomorrow (because of the wrasse, I'm following the suggestion made by
@vetteguy53081 in
this thread but I'm open to other recommendations). I added the copper in 1ml increments over three hours to acclimate.
Wrasse is doing fine, active and still eating, but the video below shows what the royal gramma has been doing all day - hanging vertically inside his ceramic cave rock. He's not breathing fast, but is lethargic, not responding to the flashlight when I shine it on him. If you look closely, there's a spot at what I think is the anus, and I'm wondering if maybe something is wrong other than ich - internal parasites, maybe?