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Home      Reply		Viewed: 582 -- Replies: 5
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Posted	My fish are dying
17-05-2005 16:57 by moidore	I have a problem with my pond. I had over 1000 natives (minnoes size), and then someone gave me about 200 fancy goldfish. I had the new fish for about two months without problems; then a professional firm came to get most of them. They emptied my pond to catch the fish (at their request), and I cleaned it at the same time w/out using any chemicals or soap. The same day my natives started to die; they all died in about three days Now the few fancy goldfish I kept are sick, too. I have a beautiful white one that is turning red under my very eyes. I half expect him to start bleeding through the scales. I call the professional firm. They said the fish they took are also dying. They put some stresscoat in the tank and are observing them, but they had no idea why the fish were dying. Does anyone know why a white goldfish would turn red? Or what could cause such a massive dying off. The water composition is right. I check it regularly, and everything is right on - no excess of amonia or anything like that. Please, help.
17-05-2005 22:07 by Kim	Sounds like a bacterial disease, a form of Septicaemia. Disruption of the water chemistry and temperature changes would have probably caused stress to the fish and made them more susceptible to infection:(
17-05-2005 22:20 by moidore	What should I do to fix this? I never had an infection in my pond; I have had it for 10 years. It has artesian inflow, and it was naturally balanced. Thank you for your answer.
27-05-2005 05:15 by yanton	the contractors may have killed off the bacteria in the pond filtration system - all it takes is for water flow to be turned of for half an hour or so. Maybe they refilled the pond with untreated water, a large water change would suddenly add a high level of chlorine into the pond.
20-06-2005 09:46 by mick	you have up set balance and bactria cycle
29-06-2005 05:28 by Alan	Your pond sounds more like a lake I suspect you have either a bacterila or viral infection to deal with may be even sulphur dioxide poisoning (was there a smell of rotten eggs when you cleaned the pond) if so this will be at the very least the trigger. Equally the water that was put into the pond if its untreated tap water will have destroyed any beneficial bacteria due to chlorine or more than likely chloramine this is being used more often by water companies and not all treatments will deal with it an added insult is that it is often stabalised with ammonia which also needs to be dealt with. I'm concerned that the fish taken from the pond are also having problems. I would suggest treatment with the pond equivalent of Melafix it is a tea tree oil based anti bacterial remedy that does not harm beneficial bacteria. Sadly I do not hold out much hope for the white goldfish that has turned red it is likely the red you are seeing is severe haemoraging. If the pond filtration was still left wet and was open to the air I would not be overly concerned about the bacteria providing there is some oxygen it can survive for hours however if the introduced water (if tap water) has not been treated it will have destroyed the filter but I'm not convinced this is the cause. Something has been stired up whilst cleaning the pond this is the cause and if it has been 10 years since the last cleaning it makes it even more likely. Are you able to access the area that the water flows into the pond by the artesian in flow if you can test it to make sure there are no pollutants coming in. Equally test it where the water flow out of the pond I assume there is an out flow if it is naturally fed, then compare the results the ideal is that they will be identical I suspect they are not. If you do introduce Mela fix do so at the in flow this will hopefully spread it throughout the pond and do it over a period of time this way you will insure a good distribution through out the pond. If bacteria are the cause the fish will start to recover very quickly. If it is viral there may be very little you can do other than prevent secondary infection and wait it out and do all you can to clean the pond of dead fish equally dispose of the dead fish carefully perhaps burn them. In doing this the virus will be destroyed.

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