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  1. #21
    Senior Member Rank = Yonsai Naoki Atsumi's Avatar
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    Quote Originally Posted by Ajm View Post
    Never a question I thought I would have to ask but at what temp do I need to start worrying?
    Gone to check fry this morning (forgot to check temp yesterday mad busy at work) to see 27.9 baring in mind this tank as never had a heater in it small water change to bring it down to 27 and I'll do some more later on

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    As long as dissolved oxygen is ensured, its water temperature is not a problem at all, but rather preferable. In Japan, the water temperature can often exceed 30C in shallow mud ponds and small aquariums. In such cases, it is often advisable to avoid feeding during the day and to resume feeding after sunset. My own experience is that when the water temperature exceeds 28 degrees Celsius, the KOI will eat the food but will show signs of being unable to digest it. (Didn't we say many times that we are more particular about the condition and shape of the faeces? ) For me, the ideal water temperature would be around 25C. I have had several perfect environmental cycles where I have been able to feed quite heavily in this temperature range and still have very little droppings. (It didn't last long when I was in the UK, but it did happen. ) In Japan, almost no one cools their water in the middle of summer, so I can't say as I have no experience of keeping them in a temperature range below that, but it seems that South African hobbyists have had pretty good results even at around 24C during the summer.so perhaps they have better conditions than us Japanese, who have to stop feeding or reduce the amount of food because the water temperature is too warm in mid-summer.

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  3. #22
    Senior Member Rank = Jussai Mikeh83's Avatar
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    Thanks for your input Naoki always an interesting perspective you provided. You have mentioned again how in Japan the importance is placed on the kois digestion/ faeces above all else. When I have asked for examples of what is good and what is bad from a digestive/faeces perspective you have unfortunately failed to provide any useful information.


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  5. #23
    Senior Member Rank = Yonsai Naoki Atsumi's Avatar
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    Quote Originally Posted by Mikeh83 View Post
    Thanks for your input Naoki always an interesting perspective you provided. You have mentioned again how in Japan the importance is placed on the koi’s digestion/ faeces above all else. When I have asked for examples of what is good and what is bad from a digestive/faeces perspective you have unfortunately failed to provide any useful information.
    Thank you for your interest. Unfortunately we don't have a standard for KOI keeping, so we can't say anything definitive. To put it crudely, we live in a world where the right answer is the one with the best results. We are not like tropical fish keepers who are always trying to fit a test kit to a water quality test. We believe that the best strategy is for everyone to fine-tune in their own way. So why don't I start by giving you bits and pieces of information so that you can work out the best way forward?

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  7. #24
    Senior Member Rank = Adult Champion davethefish1's Avatar
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    Quote Originally Posted by Naoki Atsumi View Post
    Thank you for your interest. Unfortunately we don't have a standard for KOI keeping, so we can't say anything definitive. To put it crudely, we live in a world where the right answer is the one with the best results. We are not like tropical fish keepers who are always trying to fit a test kit to a water quality test. We believe that the best strategy is for everyone to fine-tune in their own way. So why don't I start by giving you bits and pieces of information so that you can work out the best way forward?
    i think what mike is driving at is simply...
    show us what you consider to be good poop, and show us what you consider to be bad poop..
    .drawings or pictures...

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  9. #25
    Senior Member Rank = Yonsai Naoki Atsumi's Avatar
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    Quote Originally Posted by davethefish1 View Post
    i think what mike is driving at is simply...
    show us what you consider to be good poop, and show us what you consider to be bad poop..
    .drawings or pictures...
    Roger that. First of all, when we start to raise KOI in Japan, we are taught that UKIFUN (faeces floating on the surface of the pond) is undigested faeces and that we are feeding too much.
    It is certainly not desirable to see a lot of bloody or jelly-like material over a long period of time.

    When I visited England for the first time, I went to the house of a man who published a Nishikigoi magazine at that time, and I saw a lot of undigested faeces floating all over the place, while he was happily feeding silk worm pupae to his Koi because they were happy to eat them when the water temperature was less than 20 degrees Celsius. I remember thinking that it is not yet customary to check the digestive status of KOI in this country.

    As I mentioned before, I found some American threads and tropical fish researchers mentioning them.
    https://www.koiphen.com/forums/showt...Please-clarify
    https://www.koiphen.com/forums/showt...ace-what-is-it
    https://www.koiphen.com/forums/showt...ting-Fish-Poop
    https://www.youtube.com/watch?v=HHJ0nKIMvfg

    As for the shape of the feces, I found some guidelines here that are pretty close to what I'm thinking.
    https://allaboutkoi.us/2016/04/22/koi-feces-diagosis/
    However, this is only a reference: KOI's appetite, pond water contamination and number of times the filter tank has been cleaned.
    I think it is something that should be improved by grasping the complexities of such things.
    Last edited by Naoki Atsumi; 26-07-2021 at 05:13 PM.

  10. #26
    Extreme Koi Member Rank = Adult Champion bowsaw's Avatar
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    think mine must be at their too hot now, 2 days of not wanting to feed, but then its been flipping hot here with that whole risk to health met office warning on this area
    the slow pond build thread

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  12. #27
    Senior Member Rank = Grand Champion RS2OOO's Avatar
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    Quote Originally Posted by bowsaw View Post
    think mine must be at their too hot now, 2 days of not wanting to feed, but then its been flipping hot here with that whole risk to health met office warning on this area
    When they started issuing warnings that it was going to be cold in winter i actually said to the wife, give it a couple of years and they'll be giving warnings that it's going to be hot in summer.

    And here we are!

    When they first issued an extreme heat warning in the South West on the evening weather I was genuinely expecting to see 40C, then the map came up showing temps been 28 and 31 and I found it quite embarrassing to watch!

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