Help with purple tang

[kraut3253]

A tang that I have had for 3 years suddenly became extremely sick after I cleaned the tank today. He's been was healthy and lively while I was cleaning the tank, eating the algae that I was scrubbing off and such. Then 20 minutes later he is gasping upside down at the bottom of the tank with his skin peeling off.

I don't get it. There have been no livestock additions for many months and his only companions in the tank are a BTA and some soft corals. What could possibly have affected him that quickly?

The white spots are the peeling skin and the black rim around his fins was not there before I cleaned the tank.

Does anyone have any suggestions about what I can do?

 

[kraut3253]

He just died 1 hr after the first symtoms:sad2:. I'm guessing that something must have put him into toxic shock or something.

 

[iamwrasseman]

i just lost a bunch or fish from ammonia cleaner that got on my food ,i didnt realize it until the damage was done . you had to have some sort of contamination during the water change . think back hard so you dont do it again .

 

[jcw]

I used a powerhead to clean that leaked current. Lead to the death of a dwarf angel.

I read about releasing hydrogen sulfide in the sand bed that can poison a tank.

 

[kraut3253]

It could be that I hit a pocket of hydrogen sulfide while I was cleaning the gravel. The odd thing is that the fish in my other tank which shares the same sump show no signs of stress at all.

Definitely not the current leakage though. Ever since I had a shocking experience reaching into one of my tanks, I use GFIs and a grounding probe for everything. Whenever the a pump starts tripping the GFI, I throw it out.