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  1. #1
    Extreme Koi Member Rank = Sansai StevePeps's Avatar
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    Anyone know what this is ….

    Got a couple of fish with some sort of white film/mucus on them .
    anyone know what it is and is there any cure .
    not sure you can see in the pictures .

    Thanks Steve


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  2. #2
    The mucus coat on a fish is its first line of defence against unsuitable water conditions or parasites so, if production has increased, the first thing to do is to check the water parameters. Do this quickly so as not to delay any medicinal treatment that may be necessary then, if they're within acceptable limits, you should scrape it in order the diagnose if there are parasites and which one(s) so that the correct treatment can be used. Adding random treatments is likely to be ineffective or, possibly, harmful.

    So, let's start this correctly, can you confirm that you are dechlorinating any top up water and whether you use a purifier, a proprietary dechlorinator or sodium thiosulphate and give us the values for ammonia, nitrite, pH and chlorine/chloramine or confirmation that a DPD4 test is clear. Values for KH and nitrate would also be helpful but the first four are essential.

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  4. #3
    Extreme Koi Member Rank = Sansai StevePeps's Avatar
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    Hi Manky
    thanks for replying .
    I,ve never used any dechlorinators and had my pond for almost 20 years .
    last water test I did about a month ago was all clear .
    l’ve changed the food in last month or two to Coppens and was Hikari friend . I have noticed the water is more brown than green as was previous .
    I will do a new test and let you know results , probably will be next week as away this.

    Steve

  5. #4
    Quote Originally Posted by StevePeps View Post
    Hi Manky
    thanks for replying .
    I,ve never used any dechlorinators and had my pond for almost 20 years .
    last water test I did about a month ago was all clear .
    l’ve changed the food in last month or two to Coppens and was Hikari friend . I have noticed the water is more brown than green as was previous .
    I will do a new test and let you know results , probably will be next week as away this.

    Steve

    Chlorine is toxic to koi especially now chloramine is increasingly being used and those who don't use a dechlorinator are subjecting their koi to repeated low level doses of a poison, relying on it being diluted to a non-lethal level by the water already in the pond. However, as I always argue, there is no safe level of a poison in a koi pond so dechlorinators are essential.

    You can disregard the food as a possible cause but two water issues that could be possible causes of excess mucus are a reaction to chlorine/chloramine or an impending pH crash so, if you can't test the water for a few weeks, I would suggest doing a large water change using a dechlorinator or sodium thiosulphate before you go. This would head off a pH issue while also removing any chlorine/chloramine already in the water.

    That wouldn't help with another possible cause, a parasite infection, so you should get the water tests done as soon as you can because, if the mucus isn't due to a water issue, any infection would be getting worse.

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  7. #5
    Extreme Koi Member Rank = Sansai StevePeps's Avatar
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    Thanks Manky
    i’ll get tests done soon as , I generally do a water change this time of year .
    let you know how I get on.

    Steve

  8. #6
    Extreme Koi Member Rank = Sansai StevePeps's Avatar
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    What is the best dechlorinator to buy please ?

  9. #7
    Senior Member Rank = Supreme Champion Ajm's Avatar
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    https://www.ebay.co.uk/itm/Sodium-Th...-127635-2958-0


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  11. #8
    Senior Member Rank = Grand Champion RS2OOO's Avatar
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    Photos aren't clear (not helped by the fact I'm viewing from small phone) but from those photos alone I'm not convinced it's excess mucus. actually looks waxy, like carp pox starting to flare up.

    Would need close up photos ideally in a bowl to confirm that, or for you to feel it and see if it is excess mucus (which may have signs of shedding) or whether it's more waxy and viral like.

    Sent from my Pixel 4a using Tapatalk

  12. #9
    Senior Member Rank = Rokusai Steve's koi's Avatar
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    Sorry for gate crashing. RS your message box is full

  13. #10
    Senior Member Rank = Grand Champion RS2OOO's Avatar
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    Quote Originally Posted by Steve's koi View Post
    Sorry for gate crashing. RS your message box is full
    Sorry mate, I've deleted a few now to make room.

    Sent from my Pixel 4a using Tapatalk

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