All my fish died. =( - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 03-14-2008, 11:07 PM Thread Starter
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All my fish died. =(

Well, all my fish died the other day. I thought that there must have been a nitrite spike or something so I went out and bought some test strips and here were the results.

Nitrates 20 ppm
Nitrites 0 ppm
Total Hardness 150 ppm (label says it's hard)
Total Alkalinity 0 ppm
pH 5.5


I don't know why the Alkalinity would do that all of a sudden if the fish were fine for months. Does anybody have any ideas on why this happened?
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post #2 of 11 (permalink) Old 03-14-2008, 11:23 PM
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Did you test ammonia? Odd that it would spike in an established tank, but it's the most toxic of the nitrogen forms. Had you done a water change recently? It would seem likely to be some sort of poisoning.

Nothing good happens fast in an ecosystem.
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post #3 of 11 (permalink) Old 03-14-2008, 11:29 PM Thread Starter
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Excuse me the Ammonia is at 0ppm as well.

I did do a water change recently so I thought that might have messed with the cycle but it seems to be fine. Perhaps my tap water is no longer alkaline? I don't know why this would be. Is there anything I would have around the kitchen to increase alkalinity?
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post #4 of 11 (permalink) Old 03-14-2008, 11:34 PM
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Test your tap first! But the answer is yes...

Nothing good happens fast in an ecosystem.
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post #5 of 11 (permalink) Old 03-14-2008, 11:52 PM Thread Starter
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Alright, I just tested the tap and it says Alkalinity is at 20 ppm. Is this normal?
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post #6 of 11 (permalink) Old 03-15-2008, 12:19 AM
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"Normal?" It's not what I'd call soft! Test the pH, and if you have the kit, GH. That'll give us a better feel for what you're working with. Odd that your pH in the tank is 5.5 if you do regular partial water changes.

Nothing good happens fast in an ecosystem.
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post #7 of 11 (permalink) Old 03-15-2008, 12:27 AM Thread Starter
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Complete stats for tap water.

Nitrate 0
Nitrite 0
Hardness GH 150
Alkalinity 20 ppm
pH 6.2
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post #8 of 11 (permalink) Old 03-15-2008, 12:30 AM
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Test strip sticks are pretty much useless,
no way to get a semi accurate reading with those.

Do you have a filter on the tank?
Possibly the fish suffocated?
Pollution?

Craig

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post #9 of 11 (permalink) Old 03-15-2008, 12:49 AM
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If they died soon after a water change check with your local water provider to see if there have been any changes to the way they are treating your tap water.
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post #10 of 11 (permalink) Old 03-15-2008, 02:10 AM
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It's happened before. Sometimes tap water comes out different.

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post #11 of 11 (permalink) Old 03-16-2008, 02:05 AM Thread Starter
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I added a teaspoon of baking soda to my tank and now the alkalinity is back up to ideal levels and the pH came up to 7.5. I got a dozen feeder guppies today and they're doing wonderfully. =]
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