Fish die-off, now what?

[OnePuffMan]

Long story short, I got a fish I thought was quarantined properly, it died in a week and infected a majority of the tank with ich. We went from 15 fish to 7 and now the question is what to do from here.

The normal thing would be to fallow the DT and re set up my QT, but it'd be difficult to catch the remaining fish (the two canarytop wrasses especially). I'm also concerned about having 4 chromis, 2 wrasse, a 5" goby, and a filefish in a 30 gallon tank for 3 months. Are there any other options that I'm missing or will that tank be OK?

I'm halfway to saying "forget it" and just roll the dice with non QT fish and accept the ich. I just had an ICP test and my parameters are good, except phos, which is about 0.5 but stable.

 

[vetteguy53081]

Long story short, I got a fish I thought was quarantined properly, it died in a week and infected a majority of the tank with ich. We went from 15 fish to 7 and now the question is what to do from here.

The normal thing would be to fallow the DT and re set up my QT, but it'd be difficult to catch the remaining fish (the two canarytop wrasses especially). I'm also concerned about having 4 chromis, 2 wrasse, a 5" goby, and a filefish in a 30 gallon tank for 3 months. Are there any other options that I'm missing or will that tank be OK?

I'm halfway to saying "forget it" and just roll the dice with non QT fish and accept the ich. I just had an ICP test and my parameters are good, except phos, which is about 0.5 but stable.

catch at night , remove rock and net. They need quarantine and treatment for best success of beating the outbreak

 

[OnePuffMan]

I'm a little concerned it isn't ich since most of the dead fish were not covered in spots. The worst-looking one was the foxface and he is showing very few signs, though his eyes are clouded and he is likely to not make it.

Most dies with nothing obvious...ammonia test showed zero. Corals are looking great (dosing Polyp Labs Medic)

 

[Jay Hemdal Verified Community Expert]

I'm a little concerned it isn't ich since most of the dead fish were not covered in spots. The worst-looking one was the foxface and he is showing very few signs, though his eyes are clouded and he is likely to not make it.

Most dies with nothing obvious...ammonia test showed zero. Corals are looking great (dosing Polyp Labs Medic)

Accurate diagnosis is vital - my first read also questioned if this was ich, since half the fish survived. The only way that will happen with ich is if you started some sort of treatment - did you do that, or did the remaining fish just survive on their own?
What species of fish died?

 

[OnePuffMan]

I am doing Polyp Lab Medic, but half died after dosing started.

Dead: clown, hawkfish, blenny, cardinal, tang, foxface (probably)

Surviving: chromis, dartfish, goby, Halichoeres wrasse, cleaner wrasse

Corals and nem are looking amazing.

 

[Jay Hemdal Verified Community Expert]

I am doing Polyp Lab Medic, but half died after dosing started.

Dead: clown, hawkfish, blenny, cardinal, tang, foxface (probably)

Surviving: chromis, dartfish, goby, Halichoeres wrasse, cleaner wrasse

Corals and nem are looking amazing.

Ok, the medic may have saved the remaining fish, but just wasn’t fast enough to save them all. I think if you wait 60 days with no sign of disease, you can consider the tank “clean”.