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Thread: Mass death toll

  1. #1
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    Mass death toll

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    Today I have a total of 9 dead Cardinals, 5 dead Rummy Noses, 2 dead Yamatos and 2 Guppies.

    My Hi-Fins, X-Rays, Holland Rams, Rasboras are doing well. Only one Rasbora seems to be dying right now.

    I don't know what happened. I took a number of tests and the readings are:
    pH: 7
    gH: 15gH
    Ammonia: 0
    Nitrite: 0.25
    CO2 level: Green (ie. OK)

    My tank is NanoCube 24.

    I thought maybe the gH is too high, what do you think?

    And, I thought I saw something like a white patch (not protruding, but seems to be beneth the scales) on some of the Cardinals, is that a disease?

    Right now, the water starts to get a little cloudy.

    Any help?
    Last edited by nkthen; 13th Jul 2006 at 22:17.

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    it sounds like you might have a bacteria bloom which will strip the oxygen out of the water, btw how big is a nano cube 24?.
    mick

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    Quote Originally Posted by mickthefish
    it sounds like you might have a bacteria bloom which will strip the oxygen out of the water, btw how big is a nano cube 24?.
    mick
    If it strips oxygen, my fishes should be at the tops of the water. Some of my Cardinals and Rummy Noses are still staying near the bottom of the tank.

    NanoCube is 24 Gallon.

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    it was just a thought, but your GH is very high for characins but it shouldn't have harmed your guppies, this is baffling.
    i don't use co2 so i cannot give an answer to that.
    mick

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    Quote Originally Posted by nkthen

    NanoCube is 24 Gallon.
    Err... 24 gallons? That's like 96litres... So a 60cmx40cmx40cm tank?
    Not exactly nano...

    But maybe a spike in ammonia which was not detect by the test kit?
    ~ Vincent ~ Fishes calm your mind...
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    Nano has got 2 models: Nanocube 12 and Nanocube 24

    Is that possible for a spike in ammonia without warning?

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    Was there a recent increase in bioload? Also interesting that your nitrite is not zero...
    Means the nitrogen cycle might not have completed...
    ~ Vincent ~ Fishes calm your mind...
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    Hmm... I have about 50+ tetras with plant before this happens. My filter is only 3 weeks+ old.

    And my other fishes are still OK. I thought it's the Cardinals and Rummys that are sensitive to changes in gH is it?


    BTW, just an update: Some of the snails have just died. They turn black. Looks like a diease to me right?
    Last edited by nkthen; 14th Jul 2006 at 10:19.

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    That seems like a lot of fish in a smallish tank with a new filter. I won't be surprised with any ammonia spikes. Are the fish all introduced into the tank at the same time?
    Read me! :bigsmile: http://justikanz.blogspot.com/

    I'm crypt collecting... Starting cheap, now have Cryptocoryne beckettii, C.beckettii var petchii, C.crispatula var.balansae, C.griffithii(Melted! ), C.nurii, C.parva, C.pygmaea(Melted! ), C.tonkinensis(Melted! ), C.walkeri, C.wendtii 'Brown', C.wendtii 'Green', C.wendtii 'Green Gecko', C.wendtii 'Tropica' and Cryptocoryne x willisii

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    Not all the fishes were introduced together, but in batches.

    Maybe the tank is still new. The LFS guys told me to wait for another 1-2 weeks before bringing in the Cardinals and Rummies. The rest of the fishes like X-Rays and Hi-Fins are 'tougher'.

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    How big exactly is your 24gallons?

    Add any fish in small numbers in this initial stage, for example, 5 neons at a time for a week until the filter matures. I would be on the safe side and assume that it will take 2-3 months for the filter to mature. Just a guesstimation...
    Read me! :bigsmile: http://justikanz.blogspot.com/

    I'm crypt collecting... Starting cheap, now have Cryptocoryne beckettii, C.beckettii var petchii, C.crispatula var.balansae, C.griffithii(Melted! ), C.nurii, C.parva, C.pygmaea(Melted! ), C.tonkinensis(Melted! ), C.walkeri, C.wendtii 'Brown', C.wendtii 'Green', C.wendtii 'Green Gecko', C.wendtii 'Tropica' and Cryptocoryne x willisii

    Oh, juggling is hard work, man!...

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    It's 18" x 19.6" x 19.7". Quite an OK size. Was told that I can put 50-100 fishes if I want.

    I think 50 is better. Now I have 25+ fishes.

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    That's too small for 50 fish, in my opinion... Anyway, just get your filter matured first...
    Read me! :bigsmile: http://justikanz.blogspot.com/

    I'm crypt collecting... Starting cheap, now have Cryptocoryne beckettii, C.beckettii var petchii, C.crispatula var.balansae, C.griffithii(Melted! ), C.nurii, C.parva, C.pygmaea(Melted! ), C.tonkinensis(Melted! ), C.walkeri, C.wendtii 'Brown', C.wendtii 'Green', C.wendtii 'Green Gecko', C.wendtii 'Tropica' and Cryptocoryne x willisii

    Oh, juggling is hard work, man!...

  14. #14
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    Quote Originally Posted by nkthen
    It's 18" x 19.6" x 19.7". Quite an OK size. Was told that I can put 50-100 fishes if I want.
    Don't think I need to guess who told you that. That person probably didn't elaborate on the size of the fish that he/she was refering to.

    Anyway, I suspect the tank's not matured (enough) to handle the bioload.
    P-L-E-C-O-R-Y=M-A-N-I-A!!! YEAH!
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    50+ small tetras is too many? OK, then I'll stop adding fishes and cap it at 30+ then...

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    I think you are referring to the JBJ NanoCube, right?
    If so, don't think the stock filtration system is able to handle the high bioload.
    Try reducing our bioload and maybe can invest in filter medias like biohome.

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    Yes, it's JBJ NanoCube.

    If I invest in another one, where can I put it?

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    I think you got me wrong, I was referring to the filter media, not another filter.
    If I remember correctly, the stock filter comes only with filter sponges and filter wool, right?
    You can replace some of these with BioHome and Mr Aqua CR just to name a few.
    Just to add, to reduce the loss of CO2, you might want to raise the height of
    the filter media in the first compartment where the water enter through. Less splashing= lesser CO2 lost

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    Yes, I got you wrong because I already have a set of Bio-Filter installed in the 2nd compartment. I also don't know until LFS told me about it.

    I've got a carbon-like material in the 2nd compartment to control the ammonia and nitrite level and now the situation seems to be better now... My X-Rays, Hi-Fin, Rams and Rasboras are looking healthy.

    But one thing for sure, my entire Cardinal population was exterminated and I'm left with only one Rummy Nose.

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    Latest update: I've introduced 10 Cardinals and 7 Mickey Mouse Platy to the tank 3 days ago.

    It seems like they are the only ones that died. My Cardinal dies one by one everyday and this also happens to my Mickey Mouse Platy.

    No symptons, no struggle, nothing unusual. Maybe my tank is anti-cardinals?

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