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Thread: Fish still dying
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09-06-2019, 10:09 AM #1
Fish still dying
Further to my previous thread, I still have fish dying.
The pond was treated with Fluke P even though no flukes could be seen under microscope.
I did a 95% dechlorinated water change to remove any toxins.
Stream and waterfalls running 24 hours.
Oxygenator reduced by 50%.
There is still no evidence of any problems on the live or dead fish. No white spot, fungus, fin damage, bloating, leeches, worms. Nothing.
Right now there are 12 of the original 60 fish alive. One is gasping at the surface, one is stationary below the surface (24 hours), all others are feeding and acting normally.
I have totally run out of ideas. Does anyone have any suggestions other than let them all die and let the pond stand empty of fish for several weeks before any new fish?
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Stuffyrat Thanked / Liked this Post
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09-06-2019, 10:20 AM #2
Really sorry your loosing fish mate I had similar problem years ago managed to save 3 fish out of whole pond, about 40 . Have you got means of quarantine ? Somewhere you can control temp ect a bit easier? The fish can help themselves in warmer water or how about medicated food? About all I sugest , I take it your filter is mature and your water is within parameters
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09-06-2019, 10:33 AM #3
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09-06-2019, 11:05 AM #4
I do have a quarantine tank but I transferred 10 fish to the tank and 8 of them still died. I don't think the stress helped. I don't use filtration. It is not a koi pond. It has been running as an eco pond for 3 or 4 years. It's 44,000 litres so a stable environment.
Just done another test as follows:
NO3 - 10
NO2 - 0
GH - 8
KH - 6
PH - 8.4
CL2 - 0
AMMONIA - 0
KH is the worst but still within good parameter.
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09-06-2019, 11:06 AM #5
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09-06-2019, 05:07 PM #6
Syd, I would still give Lee Burroughs a ring, as said in a previous post ( if he hasn't retired yet that is ). He will travel or he will
be able to give you advice on the phone.
Have you or any neighbours been spraying anything in the garden, Pesticides or anything like that ? things can and will
get carried on the wind .
You can buy pond detox formulas to neutralise what ever is going on in the pond if your sure its not a parasite problem.
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09-06-2019, 06:16 PM #7John
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09-06-2019, 06:20 PM #8
I really think quarantine is the way I would go just to stabilise the fish and if it is infection it would limit damage to the rest of your fish, also would give a little breathing space to get some help or just time to figure things out, just my opinion I'm no expert but damage limitation seems sensible to me
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freddyboy Thanked / Liked this Post
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09-06-2019, 06:59 PM #9
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09-06-2019, 07:10 PM #10
There's not many fish left now so quarantine would just confine them into a smaller space with added stress. The last ones I took out of the pond died within 24 hours so I really don't see what quarantine would do. Under normal circumstances I would agree with you. Through the years I have bred tropical fish, owned a reef tank and the pond was originally for koi. The only times I have used quarantine for any type of fish is for new additions or when just one or two fish have needed localised treatment. Whatever this is has travelled through the pond and all the fish.
My only assumption now is that the fish have sustained internal damage, probably gills, and it is just a matter of time if they recover or die. Even Tetra have not been able to suggest anything else.
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Stuffyrat Thanked / Liked this Post
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09-06-2019, 07:20 PM #11
Have you got a uv light on the pond? The only outher thing I can possibly think of with all your water tests coming back OK would be an alge infection such as blue alge I know a few lakes have had the issue with it and can be detrimental to fish ect, it's the only thing I can think of, sorry I carnt be more helpful it must be terrible not being able to help your fish
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freddyboy Thanked / Liked this Post
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09-06-2019, 08:07 PM #12
What is the test kit that gave those readings?
What size is your QT?
You say you have no filtration ... does that mean there is none on the QT too?
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09-06-2019, 11:05 PM #13
I really don't have a clue as to what could be going on here, so I am just p*ssing in the wind when I say this..... and maybe if I can't offer proper advice I shouldn't guess as to solutions.
But, I have read of a similar situation to yours where a fish vet was at a complete loss as to the cause and after weeks of getting nowhere they decided to go down the "shotgun" route by using Pond Detox Formula by Lincolnshire Fish Health. The pond and all its fish quickly made a somewhat miraculous recovery.
https://www.koi-zone.co.uk/Pond-Detox-Formula--300gms
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09-06-2019, 11:18 PM #14
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Ajm Thanked / Liked this Post
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10-06-2019, 12:15 AM #15
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10-06-2019, 12:18 AM #16
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Trace Thanked / Liked this Post
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10-06-2019, 12:28 AM #17
Thanks RS. Many years ago I also read of a similar situation where an owner lost everything despite lab water tests and biopsy on euthanised fish. Looks like it's my turn. I have recorded the details of the Detox and will try it if any more fish die over the next few days. Still hoping the new water has got rid of the problem. Even desludged the pond floor. Maybe the existing fish have been damaged beyond recovery, so I am going to try adding a new fish to the pond to see how it fairs before restocking. If that also dies then it has to be something contagious and nothing to do with the pond.
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10-06-2019, 12:30 AM #18
Syd please don't take this the wrong way I'm trying to help ... I've got no experience with the tetra kit but I do question the results.
Unfiltered 250L QT with 10x stressed koi in it? ... I've had a single 6" goldfish in 200L (unfiltered) without feeding and the water had a dangerous level of Ammonia in it within 48hrs.
Have you got any fish in the QT just now? ... if so what are the water parameters for the QT?
Like I said this is not criticism ... just trying to help ... something doesn't add up here ...
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10-06-2019, 01:33 AM #19
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Trace Thanked / Liked this Post
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10-06-2019, 01:44 AM #20
Best plants to remove Nitrate
pug has a very impressive veg filter on his pond, have a look at some of his his youtube videos....