Fish Deaths

[Trilkin]

Hi all

Ive been running a 60 gallon reef system for about 9 months(moved house),im keeping a mix of both Soft and Hard corals and a Bubble Tip Anemone.

All my corals are doing fine,but in the last 6 months all the fish I have intoduced,Yellow tang,Shrimp goby,Solaris blenny,Foxface,Maroon clown,Y.T Damsel,have all died within 3-10 days of being in my tank.

All the fish have been acclimatised before adding,as well as being healthy and eating at the LFS...

I have checked everything from my TDS levels of my R.O unit,to every last concievable water parameter test available to mankind..

I havent noticed any signs of stress from any of the fish,i.e laboured breathing or any sign of ich...The fish just appear dead on the substrate with no marks or open wounds...

I do a 10% water change every week and run a Phosphate reactor...

No signs of Mantis Shrimp or Crab to make things worse....



Any Help??

 

[Quaos]

Do you have any fish at all in the tank?

 

[Trilkin]

Nope...

1 algae snail.......

 

[Recty]

Have you done a test on dissolved oxygen?

Do you run a skimmer?

 

[Trilkin]

Hi

Im running a Deltec 525 skimmer,seems to be skimming perfectly at the moment...

Wouldnt a sign of dissolved oxygen be an accumulation of air bubbles within the tank?I'm moving the water in the display about 15-20 times an hour so I think the water's being oxygenated well enough?

If I had an dissolved oxygen problem,the fish would show a definite breathing change and normally the gills tend to form a whitish to pinkish hue when in distress.Ive seen this in a FO system..aint pretty.

My maroon clown hosted in the B.T,ate and swam normally,a week later gone......Similiar story with the others..

I cant even narrow it down to temperature fluctuations..