High Nitrate even with plants

Discussion in 'Water Chemistry' started by kipperfeet, Oct 13, 2016.

  1. kipperfeet

    kipperfeet

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    This year was a hot one and my plants in the pond did well but nitrate levels were still pretty high. I have 3 canister filters one gravity two aeration pumps and a UV on 24 hrs 7 days a week but due to fish inheritance the pond is heavily stocked. Nitite NO2- is barely detectable ,pH is fine, carbonate hardness OK , TDS suggests plenty of mineral buffering from rocks , I have lots of biological media in the filters and the pump aerates OK. The fish eat /disturb any small plants so and I have Calla Lili, Marsh Marigold, Iris and rushes. Any ideas of any other plants to try (can't try water lilies water moving too much for them) ?
    Thanks
    Cliff
     
    kipperfeet, Oct 13, 2016
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  2. kipperfeet

    Meyer Jordan Tadpole

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    Could you please post the actual numeric values of your ponds biochemical parameters? "high", "barely detectable", "fine" and "suggests" offer little insight.
     
    Meyer Jordan, Oct 13, 2016
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  3. kipperfeet

    Mmathis TurtleMommy

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    Water changes might be helpful.
     
    Mmathis, Oct 13, 2016
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  4. kipperfeet

    Faebinder

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    yeah pond surface area plus depth, bog surface area if any, number of fish and their sizes approximately, the nitrates/nitrites/ammonia numbers from your tests.

    Finally, do you water change? If so what is the nitrates/ammonia level in the incoming water.
     
    Faebinder, Oct 13, 2016
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  5. kipperfeet

    peter hillman Let me think for minute....

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    "fish inheritance". You gotta learn to say no! Strange fish sometimes can cause serious problems.
     
    peter hillman, Oct 14, 2016
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  6. kipperfeet

    adavisus

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    Your nitrate levels probably match quite precisely with the fish food that has been piling in, less what little the plants were able to abstract.

    Water hyacinth gobbles it up 4x more than other plants
     
    adavisus, Oct 14, 2016
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  7. kipperfeet

    mgmine

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    Question is how are your fish doing? If fine then just keep an eye on them.
     
    mgmine, Oct 16, 2016
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  8. kipperfeet

    Mmathis TurtleMommy

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    Good to know!
     
    Mmathis, Oct 16, 2016
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  9. kipperfeet

    carolinaguy

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    Nitrate is really not a problem for koi. According to dr st earne (sp) fish do fine even up to 600 in studies. If you practice the standard recommendation of a 10% water change a week, you should have no problem. The only hassle is when the value gets high enough that you get foam around waterfalls and aerators but that is also due to DOCs, so the 10% change solves that too.
     
    carolinaguy, Mar 2, 2017
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