lost all fish!!
 

need some input from everyone here!! I've got an established 92 corner tank that housed a 2" hippo, a 2"yellow tang, a clown fish, 2 pink anthias, a firefish, a cb shrimp large cleanup crew, and quite a few corals. All fish have been doing excellent for the last 4 months till 2 weeks back. I made a trip up to calgary and came home with a 3" naso tang, he did fine for the first day then broke out in ich and was gone the next afternoon!! Now i've never had signs of ich in this tank yet but 2 nights ago the firefish, clown and hippo showed minor signs of ich. yesterday i lost all three of them and now today i come home from work to find the rest of my fish dead!!! All i have left is the cb shrimp, all corals are looking awesome, all water tests check out ok ( even ran to the lfs to confirm my test to theirs) Anybody have any ideas as what happened so fast? Could ich have moved in and wiped out all my fish in a couple of days!! If so, should i start to un-ich my tank while all fish are gone?

Frustrated as **ck, but need second opinions please!!
Larry

Sorry to hear about this. That's horrible. It could possibly have been Marine Velvet to kill so fast like that. If you leave your tank fishless for 8 weeks the Ich or MV will be gone. The parasites cannot live without a fish host. Eight weeks is the recommended time for your tank to remain fallow.
Good Luck.

Sorry for your loss. I would leave the tank fishless for 6 to 8 weeks and allow the ich to completely die off. Then before you add anything else set up a proper quarantine system to avoid it ever happening again.

I would suspect an ammonia spike or some other chemical or metabolic cause if multiple fish die at the same time. Maybe test your parameters. To me it is unlikely that an infectious disease would kill everything at once, rather than one fish at a time.

i thought it was all very quick and sudden as well but my ammonia was at 0.1 after having two deceased fish in there till i got home.

I take it you have a corner upright.
Your tank was never suitable for one tang let alone 5. I it obvious that you have a love for tangs but wait until you get a large tank (6 foot to house them)

I doubt ich or velvet killed your fish.

The ich surfaced when the existing fish became even more stressed with the addition of the naso tang
IMO your fish suffocated to death for lack of oxygen f you have ruled out a extremely high heat spike.

how do you figure..lack of oxygen? No heat spike everything stays between 76@night and 78@day. I know having 3 tangs was a no-no and it gets said a bunch but they were all juvies.

I only see three tangs listed there.... did I miss something?

Definitely sounds more like velvet to me.

Trust me velvet looks like ich to start out with and it kills freakishly fast. Within 2 weeks of adding a fish that had velvet to my tank I lost a total of 24 fish to that disease with 2-4 fish dying each day everyday for a week straight. Most horrible thing to have to go though. I left my tanks 8 weeks fish free to get rid of the velvet. Lots of info on marine velvet in my signature link if you're interested. The best link on MV: http://www.reefkeeping.com/issues/20...ture/index.php

Do you ever get sick of preaching about Tangs??