Sigh… dead white fin tang

[Ascartes]

Well, it’s always the expensive fish that die isn’t it….
Just wondering if anyone can tell why
0 ammonia
0 nitrite
15 nitrate

other reef parameters are fine.
It was in a 90g with a tomini tang who is fine and some green chromis and a green shrimp which are also all fine.
He was swimming funny this morning but I had to go to jury duty so couldn’t do much other than I added some prime and threw fresh carbon on top of the filter socks to try and help.
I have the cadaver in a little plastic box if someone wants additional photos of anything.. thanks in advance

 

[vetteguy53081]

Nitrates slightly high in which ammonia has to have some reading. Are you by chance using API test kits?
If so, you are likely getting false readings. To confirm, take a water sample to a trusted LFS that does not use api test kits and have them test the water for you and see what results they come up with and for comparison

 

[Ascartes]

I’ve never heard of nitrate requiring ammonia readings. It’s a Red Sea kit, but all the shops around me use API kits to my knowledge.

Does that look like ammonia damage on the fish ?

 

[TriggerFinger]

How long ago was this tang added to your tank @Ascartes and did you do any type of quarantine?

 

[Ascartes]

How long ago was this tang added to your tank @Ascartes and did you do any type of quarantine?

This is day 8 of him being in there and I did the copper QT as per https://www.reef2reef.com/threads/current-quarantine-protocol.825055/

 

[TriggerFinger]

This is day 8 of him being in there and I did the copper QT as per https://www.reef2reef.com/threads/current-quarantine-protocol.825055/

It’s tough to say. That’s a pretty thorough medication and quarantine protocol but nothing is guaranteed. There appears to be a few spots on the tail fin but it could be sand or just the angle of the pictures. Less inclined to believe ammonia problems if the other fish are fine. Sorry for your loss.

 

[Ascartes]

Juat really want to prevent future losses here.