Help with new fish dying

[HWDylan]

Hi, I have a 75gal mixed reef tank that has been up and running for about a year now. My 3 fish (black clown, YWG, and 1 chromis) inhabitants are all healthy and happy and have been that way for quite a while (~6mo). I have recently decided that I would like to add a few fish to the tank so I got a Foxface. I acclimated him properly (dripped for ~1.5hrs) and put him in. He was fine for a few days (eating and everything) and then last night he looked pale and was breathing very fast and now he is dead. I would write this off as a fluke if this wasnt the 2nd foxface to do this as well as a royal gramma and a Kole tang. All were dead within 2 weeks of being in my tank.

What could the issue be here? I have tested as much stuff as I can and everything looks good.

NH4: 0ppm
NO3: ~5ppm
PO4: ~0.01
Ca: 470
Alk: 9.1dkh
Mg: 1350
Salinity: 1.025
Temp: 79.8 - 80.0


What could be stressing these fish to the point of death so quickly in my tank? The other inhabitants of the tank basically ignore the newbies so it isnt them I dont think.

 

[twelvefive]

Were they all purchased from the same place?

 

[HWDylan]

Yeah, all came from the same LFS

 

[eliramos]

it may be the lfs i would start qt(ing) all your fish so you dont bring in anything you dont want!

 

[twelvefive]

I'd talk to the LFS and see if they've had any issues lately... they may have just gotten a bad shipment in.

 

[Lokii_37]

i have had 2 foxfaces 2 different times from 2 different stores do the same thing. they seem to be shy fish until they get settled in. I think mine may have been weak and hungry when i got them and then the additional stress of coming from the store to my tank may have put them over the edge. i found them both, about a week after they were put into the tank, stuck to the side of my powerhead. i would really like to have one of these fish but i am done killing them for the time being