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Old 12-02-2004, 04:18 PM   #1
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fish keep dying, help!

I have a two-part question, because I have two saltwater tanks that are in trouble. One is a 40 gallon tank that's been set up for about 8 months. I slowly added fish and corals and it was looking great. I have a large whisper filter running this tank, as well as a powerhead on one side. I had a bunch of damsels, coral beauty, butterfly, and a yellow tang(which i know was a mistake), snails, crabs, and a few mushrooms. I test my water regularly and do a small water change every two weeks. Everything tested fine. I now have a qt tank, but I didnt at the time. One day, the yellow tang died, about 2-3weeks after I got him. I took him out, then 2-3 days later, all the other fish died. They werent eating, they werent swimming very much, no scratching against the rocks, no big change in discoloration, nothing growing on them, no spots or anything, just died. Everything died except the mushrooms, the snails, crabs, and a brittle star. Now, 3 weeks later, the mushrooms are blooming, snails and crabs are all over that tank, but when I try to add a couple damsels after putting them in a qt tank, they die within a day. I don't know whats in the water that allows inverts to thrive while fish cant last a day.

My other tank is a 54 Corner. And the same thing, I slowly added fish over 6-8 months, til I had some damsels, a clown, 4 green chromis, and a lemonpeel angel. I have a big canister filter running this tank and I use R.O. water when I do water changes. The lemonpeel angel lasted a couple weeks, and he had been in the LFS for almost a month before I got him. He was eating, swimming around, acting fine, then dead the next day. Now, almost a week later, all 4 chromis died, and the clown and the blue damsels arent swimming very much, but they're still eating, but the snails and crabs are doing fine. Does anyone know what I can do to save these fish? Is there some medication that I can put in the water that's like a "cure-all"? Or something? anything I can do or am doing wrong? I'd really like to save these fish. Please help
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Old 12-02-2004, 04:27 PM   #2
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?????????hmmmm??????????

Is somone using some kind of cleaning agent around the tanks??
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Old 12-02-2004, 04:40 PM   #3
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Both tanks? Wow. I'd really think hard about any cleaning agents you may be using on both. Any household pesticide bombs or anything? But than again, you say the snails and crabs are doing fine.

New rocks added before the die-offs started? Anything new?

Hate to ask - - but, could any visitors be throwing stuff into the tanks? Adults? Kids?

Sounds you got a case for CSI. Not to make light of your situation though. Sounds really scary presuming your water testing found no problems.
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Old 12-02-2004, 04:43 PM   #4
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i dont use any cleaning agents, but i use the same siphon to clean it.. and the 54 corner is in my office, another building.
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Old 12-02-2004, 04:46 PM   #5
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Whoah! Even weirder now!
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Old 12-02-2004, 05:55 PM   #6
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did you by and chance get one "container" of food and split it up for the office and home? maybe it is in the food. there has to be something in common if they both show the same symptoms

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Old 12-02-2004, 06:10 PM   #7
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I feed them both a variety of frozen food from the same packages, could that be it?
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Old 12-02-2004, 06:54 PM   #8
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What all should I be testing?

I test for pH, ammonia, nitrites, nitrates, and salinity. Do I need to get more test kits, like calcium? And should there be a difference in the tests between a fish only and a reef?
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Old 12-02-2004, 09:21 PM   #9
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calcium would not be as important for a FO unless you are growing coraline algae. as far as i have learned calcium levels plus or minus would not kill a fish. i think you hve the tests covered for general health. your inverts would show some signs as well i think if it was water quality. i am really kind of new to this myself and i wish i could help more. did any of your fish have cloudy eyes?

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Old 12-02-2004, 09:32 PM   #10
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I had a similar problem that i posted about in another location - Had a yellow tang go first and the rest of the tank followed minus my inverts...
I think my lava rock has some high iron content and may be the problem..
what kind of rock do you have?
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