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daphnia is dying but copepods and some other creatures are multiplying

Discussion in 'Amphibians & Aquatic Reptiles' started by Aniket, Mar 26, 2019.

  1. Aniket

    Aniket Fish Crazy

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    Only daphnia is not increasing and dying but copepods and other small creatures are multiplying. Whats could be the reason behind that?.
    Im feeding them dry yeast and adding little bit water everyday.

     
  2. Colin_T

    Colin_T Member

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    Poor water quality, low oxygen, or high temperatures.

    You are better off using green water instead of yeast because the green water doesn't go off and cause water quality issues. Yeast can cause ammonia problems and low oxygen levels. Check the ammonia, nitrite, nitrate & pH of the culture. Do a big water change if necessary.

    You should start a new daphnia culture every month in case one crashes.

    If this culture crashes, let it dry out for a few months then refill the container with green water and the daphnia eggs will hatch and the culture will start again.
     
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  3. Aniket

    Aniket Fish Crazy

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    Ya here temperature is little bit increasing day by day. They multiplied in winter season but now summer started
     
  4. Colin_T

    Colin_T Member

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    Daphnia are a cold water crustacean that grow in cooler weather. So if you are in summer then they will usually die off and copepods will start to grow instead. Copepods like warmer water than daphnia.

    When the water warms up, the daphnia produce egg cases that survive being dried out. These egg cases normally settle on the bottom of ponds and sit in the dirt during the dry hot period. When the weather cools down and it starts raining, the pond fills up and the egg cases open and release eggs that hatch and produce baby daphnia. When those babies mature they start to breed and the cycle starts again.
     
  5. Aniket

    Aniket Fish Crazy

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    Microworms are also not tolerate raise in temperature for more days like in winter.It affected on daphnia but betta fry are growing faster now a days. Little bit problem in ardhangin food for betta fry
     

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