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  1. #1

    Problem with one of my koi.

    Posted originally in general forum by mistake.

    My Sumi Goromo has suddenly developed in the last week some nasty looking sores / raised scales.

    See attached photos , first one a couple of weeks back which is possibly showing when looking at it now some pinkness.

    Others taken this evening.

    In general seems happy , feeding well and swims with others (though a bit grumpy after I netted him this evening)

    Never scraped a fish before or had this problem on my old pond. The pond has only been going 2-3 months and slightly struggling on getting the amonia, nitrite , nitrate under control.

    All other fish seem fine .

    Any advice gladly accepted.

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  2. #2
    Bumped as not had any replies

  3. #3
    Has it been flashing, looks like a bump that’s got infected but tricky to see properly in the water

  4. #4
    Senior Member Rank = Yonsai farmergoggin's Avatar
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    Whatís your water parameters and have you done any scrapes? Whatís your pond/filter information? How often do you clean out your filters and do water changes?

  5. #5
    Thanks for the replies.


    Pond 2500 gallons
    Filter oase profi clear compact large. Sieve and k1 combined . Gravity fed one bottom drain. Turnover estimated at once per hour.

    Been up and running about 3 months. Started off with 5 goldfish, then added 3 x 55cm koi then added 5 x 18-25 cm koi.

    Water parameters were very good (amonia at 0) till adding the last 5 and probably feeding them too much !!


    Water parameters
    PH 7.9
    Amonia 0.25 to to 0.50 ppm
    Nitrite 0.25 to 0.5 ppm
    Nitrite 40 ppm.

    Have been running approx 10 % weekly changes via cleaning sieve and daily top up.

    Have performed three 25 % Water changes in last four days.

    The only flashing that we've had is when the air pump - from bottom drain is switched off and all three of the larger koi , swim down to it and do a large roll and shoot off. Had the occasional jump from sanke and hi utsuri but not from the Goromo.

    The Goromo occasionally does it in front of the window. Almost as if showing off !!

    I don't have the facility to scrape but can net and bowl to get a better picture.

    I did wonder if it had hurt itself on the bottom drain .




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  6. #6
    Quote Originally Posted by Djstiles999 View Post
    Has it been flashing, looks like a bump thatís got infected but tricky to see properly in the water
    I dud wonder if that was the case. If it is an infected wound , what's the best way to treat it ?

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  7. #7
    You have ammonia and nitrite at a level that’s too high. I had the same issue when I started my pond and I had an equivalent of 2 koi in your pond. I’d cut right back on the food and do daily water changes until it gets under control. I added salt to my pond to mitigate the nitrite spike but that’s not necessarily a popular option and it’s difficult to get out (I’m fortunate to be able to run a high trickle in/trickle out if I need too), salt also impact on the treatments you can use if needed. My advice would be stop feeding, daily water change and get a scrape done to see if you have a parasite problem

  8. Thanks dbs Thanked / Liked this Post
  9. #8
    Quote Originally Posted by Djstiles999 View Post
    You have ammonia and nitrite at a level thatís too high. I had the same issue when I started my pond and I had an equivalent of 2 koi in your pond. Iíd cut right back on the food and do daily water changes until it gets under control. I added salt to my pond to mitigate the nitrite spike but thatís not necessarily a popular option and itís difficult to get out (Iím fortunate to be able to run a high trickle in/trickle out if I need too), salt also impact on the treatments you can use if needed. My advice would be stop feeding, daily water change and get a scrape done to see if you have a parasite problem
    Thanks , stopped feeding a couple of days back.

    Will continue with the water changes .

    Never performed a scrape before , are there any professionals on here that offer that service ? North London / South Hertfordshire based.



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  10. #9
    Your local dealer might offer the service, alternatively the BKKS have a members support network I think

  11. #10
    I looked on the bkks website and there seems to be nothing covering this area.

    Not sure there are any local dealers , apart from Garden centres .

    Currently looking on line about purchasing a scope etc.



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  12. #11
    Hopefully someone on here might be local and willing to come and help out with your first scrape? Personally intend to sedate my fish if I do a scrape, just makes life easier and gives you a chance to look them over properly

  13. #12
    Senior Member Rank = Hassai Spongebob's Avatar
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    Graeme scrapes arent rocket science, why not give it a go yourself? Microscope for sale here https://www.koiforum.uk/koi-pond-equ...-new-post.html (forum member) Although it just sounds like you are going through the inevitable NPS and due to new stocks this has compounded the situation. Presuming you can rule out parasites, you really need to get the Ammonia and Nitrite sorting.
    9000 ltr, FG, BD, Nexus 220, Draco drop in, Remora i9 ASHP, Econbead 50, Roto Innovations shower

  14. #13
    Senior Member Rank = Yonsai farmergoggin's Avatar
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    When your doing you water changes how are you dechlorinating the water? Scrapes are a must, there must a koi dealer somewhere local to you? Can you heat the water as this will boast the koi immune system and help off fight anything. If you canít scrape then I would try and treat the wounds at least.

    My local koi dealer swears by this stuff - Bactoplus Fresh Photo Synthetic Bacteria. worth a try if you canít scrape. As other have have said itís either NPS and or parasites have been brought by the new fish. The pond readings would point to NPS.

  15. #14
    Thanks spongebob and farmergoggin.

    I have a scope that my sister used as a chemistry teacher in the past arriving tomorrow and had also looked at some online. Can seem to spend a lot but not get a lot more on some. Would a 2000x scope be good enough.

    Answering some of the other points , have added a filter bomb (Aqua Evolution) to the filter to see if it will help it move on.

    Did another 25% water change today I top up through a cartridge and also the old fashion way of spraying the water in to clear the chlorine.

    Have also added 0.5 % salt .

    I did speak to one if the assistants at the local "World of Water" Centre when picking up the seat and filter start and he has said they will do scrapes but said (as above) get the parameters right first.

    The fish including the Goromo are all active and are following me round the pond begging for food!!.



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  16. #15
    I have the heater all plumped into heat but not wired in yet .
    The pind was at 21 degrees all last week but dived to 17 degrees today .

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  17. #16
    Senior Member Rank = Hassai Spongebob's Avatar
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    Hi Graeme,

    Hope you get sorted, Microscope is plenty. What size is the ASHP as up to 12kw can just be plugged in on normal plug. Has the nitrite/ammonia improved?

    James
    9000 ltr, FG, BD, Nexus 220, Draco drop in, Remora i9 ASHP, Econbead 50, Roto Innovations shower

  18. #17
    Quote Originally Posted by Spongebob View Post
    Hi Graeme,

    Hope you get sorted, Microscope is plenty. What size is the ASHP as up to 12kw can just be plugged in on normal plug. Has the nitrite/ammonia improved?

    James
    Heater is 2kw but needs to be fitted with an extra rcd (or something) electrician looked at it and as we didn't think we needed it for a few months dud other bits. Due back in a couple of weeks time !!

    Readings marginally improved .

    Fish looking really sorrowful as not had food for about 6 days.

    Goromo wound looks like it is improving .

    Thanks fir advice and support.

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  19. #18
    Senior Member Rank = Yonsai farmergoggin's Avatar
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    Grab yourself some ST crystals for your water changes.

  20. #19
    Quote Originally Posted by farmergoggin View Post
    Grab yourself some ST crystals for your water changes.
    What are ST Crystal's?

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  21. #20
    Sodium Thiosuphlate ?

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