Fish Dies after Water Changes

[wcharon]

Yes, i am buying from the same place. Well i put the water in the sump and the outlet flows all the tank thru a Seaswirl in the middle of the tank.

 

[wcharon]

Thats correct, 2 days after water change and have never have more than 3 fishes.

 

[wooden_reefer]

Could the carbon filter of the RO unit be too old?

 

[JonnyD91]

What is the container you mix the salt in (brute, drum, ect.)?
Where is the container stored?
Is the container covered?
What is in the same room as tthe container?
How old is the salt?

 

[BeanMachine]

We don't even know how big your tank is do we? If we are talking a small tank with that many fish, could be stress related 12 times in a row.

This is pointless if we don't know you what system you are working with... equipment, size, and parameters.

 

[serpentman]

I might suggest smaller more frequent water changes and see if this trend continues.

My guess is it could be a dissolved O2 issue. The latest addition probably succumbs because its is already stressed. This would lead me to assume that is requires more Oxygen than the current inhabitants.

 

[TeePee]

We don't even know how big your tank is do we? If we are talking a small tank with that many fish, could be stress related 12 times in a row.

This is pointless if we don't know you what system you are working with... equipment, size, and parameters.

I think he said its an 80 gallon reef. So we know that much anyways.

 

[surge19us]

Are these fish quarentined prior to being added to the main display tank? I doubt a water change with the listed params would cause a death of a month old fish, if healthy, and if there were contamination the other fish should at least show some signs of problems as well as eventually succumb to the same contaminant. How are the new and existing fish breathing? I would suspect flukes or ich and the existing fish are healthy enough to fend off/live with the parasite but the new succumb. Have you ever seen any white spots, even one on any of the fish? Have you ever seen any fish flash or scratch?

 

[BeanMachine]

I think he said its an 80 gallon reef. So we know that much anyways.

Oh, I missed that. My apologies. Adding a Sailfin to an 80 gallon with another Tang already probably wasn't the best idea.

 

[BeanMachine]

After 2 days salifin died, i have noticed that this is a practice that have been occuring me for a time ago with tangs, so thats why i assure is something in my wc practice.

Thanks for your advice...

Tangs require large systems to be happy and healthy, grazing on algae and what not. You can get by if they're small for a short time, but they will definitely outgrow the tank. IMO, tangs aren't the hardiest of fish so maybe you have a parameter off ie. high nitrates present. Are you skimming?

 

[Playa-1]

Test your make up water for chlorine/chloramine. It's possible your water filter unit is not taking it out of the water. Also read up on proper Quarantine before adding a new fish to the DT.