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Old 07-09-2013, 06:43 PM   #1
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Fish are dying please help!!!

Hello my tank is 9 month old and it a 40g tank I had two clowns two pajamas. My nitrite, ammonia, everything is good I just added a dottyback on Sunday from petco I know I know anyway yesterday Monday I got home and one of my clowns died and the pajamas and dottyback look white and breathing fast also sitting on the bottom the one clown is doing fine, what can it be I haven't been home yet today to see if there living but they look bad, please help thanks
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Old 07-09-2013, 08:19 PM   #2
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I doubt that a disease or parasite could kill a new fish overnight. It doesn't matter that you bought the fish from petco. All stores get their fish from the same hand full of suppliers.
I would do a large water change and possibly run some carbon for starters. What are the exact levels of ammonia and nitrite?
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Old 07-09-2013, 08:24 PM   #3
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I doubt that a disease or parasite could kill a new fish overnight. It doesn't matter that you bought the fish from petco. All stores get their fish from the same hand full of suppliers. I would do a large water change and possibly run some carbon for starters. What are the exact levels of ammonia and nitrite?
Nitrites are .5 ammonia 0
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Old 07-09-2013, 08:26 PM   #4
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Is is like a white slimed covering or white spots that look like sand? Spots are Ich, but it does not usually kill fish that quickly. If it is more a layer of dusty looking stuff or slime, it is likely Brooklynella (slime) or Marine Velvet (powdery/dusty).

Both of those act quick and can wipe out a tank in days. Brooklynella can be treated with Formalin baths and MV with copper.
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Old 07-09-2013, 08:33 PM   #5
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Is is like a white slimed covering or white spots that look like sand? Spots are Ich, but it does not usually kill fish that quickly. If it is more a layer of dusty looking stuff or slime, it is likely Brooklynella (slime) or Marine Velvet (powdery/dusty). Both of those act quick and can wipe out a tank in days. Brooklynella can be treated with Formalin baths and MV with copper.
It's more like they look sick like they lost there color not a slime also no spots but it seems it effect all the fish but one clown looks good, so what ever it is it killed 4 fish. Also my collection cup for the skimmer is looking a different color more like a yellow looking color not like it always looks like
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Old 07-09-2013, 08:34 PM   #6
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Sounds like a poison was added to the tank. Do you have young kids?
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Old 07-09-2013, 08:35 PM   #7
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Sounds like a poison was added to the tank. Do you have young kids?
Yes I do have kids
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Old 07-09-2013, 08:36 PM   #8
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Sounds like a poison was added to the tank. Do you have young kids?
I was just thinking the same thing as a possibility. Does not sound like disease.

How is your surface agitation? That could play a part with the rapid breathing.
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Old 07-09-2013, 09:16 PM   #9
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[QUOTE="TheTodd;2554814"] I was just thinking the same thing as a possibility. Does not sound like disease. How is your surface agitation? That could play a part with the rapid breathing.[/QUOTE

Sorry but surface agitation is what?
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Old 07-09-2013, 09:44 PM   #10
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The surface of your water...is it moving around a lot for good oxygen exchange. This is probably not the problem since you had the other fish for a while but it's worth looking at if one of the powerheads got moved or something.

Also, was it nitrites or nitrates that was above zero? Trites should stay at zero in a cycled tank.

The big water change that Mr X suggested would not hurt anything.
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