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Old 12-01-2013, 09:24 PM   #11
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Old 12-01-2013, 09:41 PM   #12
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I think bribo may be right, marine velvet is theonly thing I can think of that can kill so quickly. I think I mayhave had it a few years ago when I lost everything in my tank as well. It also left a hie to the fish, almost a milky or shiny sheen.

Really sorry for your losses, I know how you feel. :-(

I would look into velvet and see what the timeframe is for restocking and/or treatment/
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Old 12-01-2013, 09:45 PM   #13
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It could of been marine velvet. I know it can kill a tank very quickly.
Thank you for that possibility. I have Googled marine velvet, and looked at some of the photos of infected fish...and I think you have found the answer. Soon after I introduced the damsels Friday, Saturday (yesterday) the blue damsel appeared to be coated in a film much like the photos show. That would explain the "mistiness" that I described in my OP. I further read that the only known treatment is copper, which is out of the question because of my inverts. Now I just need to find out the life cycle of the organism to determine how long to leave the tank barren of fish to eliminate it. Any suggestions? A week? 2 weeks? A month? (or longer?)
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Old 12-02-2013, 03:10 PM   #14
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I am now CERTAIN that is was marine velvet that wiped out my tank. I looked up microscopic images of the parasite, and that is exactly what is in my tank. My only option is to leave the tank "fallow" of fish, from the best information I can find, for 6 to 8 weeks. But one question remains...and I have Googled, Binged, Yahooed, and any other search engine you can name...that question being...can my inverts (shrimp, crabs, snails and anemone) harbor the parasite? I have not found a definitive answer to that question anywhere. Perhaps, I'm HOPING and PRAYING, that someone might know the answer to this question...if the answer is yes they can, I will have to go to a LOT of trouble and expense to move and save them and rid my DT of the parasite with copper or a complete bleaching....
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Old 12-02-2013, 03:30 PM   #15
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If the inverts and coral are doing fine, then it was more likely a disease or parasite, but went pretty quick...more likely they were sick for awhile.
My only issue with the marine velvet diagnosis is that it killed new fish within a day. I've never experienced velvet first hand but that seems like an insanely fast mortality rate for a healthy fish that was just introduced to a tank.

However the inverts and coral aren't hosts to velvet so a long fallow period should work for you. I might even be inclined to wait as long as 9 weeks just to be absolutely sure that none remains left behind.
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Old 12-03-2013, 01:48 AM   #16
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I had the same issue with velvet. took out every fish I had within 24 hours. The yellow tang and pink spotted goby were the only survivors. Its a nasty fast acting disease. Thats the only thing that could have killed all my fish in such a short amount of time, I have wondered on and off over the last couple years if velvet was the culprit and it most likely was.

I left inverts in that tank and they were fine. I let my tank sit for about 2 months before I added anything again and havent had any similar issues since.
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Old 12-03-2013, 10:43 AM   #17
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Yes, from studying articles about it, it is an insidious and fast acting disease...and even if you notice and diagnose it in time, from what I've read it's already too late. Plus it's nearly impossible to treat it if there are inverts present. So just about your only choice is to wait it out without fish....Thank you!
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Old 12-08-2013, 05:05 PM   #18
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Do you quarantine your new fish before adding to your DT?
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