what water does this!?

[Electrobes]

Okay I know I should have posted in the sick fish and coral section, but I am mystified by something else. I have a single domino damsel and an algae blenny. Everything was going great, then I installed my two MJ-900's last night and still everything seemed peachy. This morning everythign still seemed just dandy, and right when I am about to go to class, the damsel is on a rock on his side breathing like there is no tomorrow, while the corals look great and the algae blenny looks just fine. I checked my refugium and there hasn't been death in my culerpa or anything that I am keeping.. so what gives? I am getting my water checked after class, but any suspisions from anyone??? Thanks

 

[Gauge]

How long has the damsel been in your tank?

I would say that if everything else is fine (since we don't have any tests to go on), that the domino just died. Fish do kick the bucket for reasons beyond our control. They aren't immortal in even the best of environments.

I would just make sure my parameters were okay, make absolutely sure there are no signs of stress in your other inhabitants, and maybe run some carbon. If you're really worried, perhaps a water change.

 

[loganj]

That would be my guess too...natural causes. Damsels are extraordinarily tough fish and will usually withstand water problems that would kill other fish. I would check the water though and maybe do a small water change.