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fish with hemorrhagic Septicemia


Question
I moved my 6 remaining goldfish into a small pond in my
yard.  I suspect they got hemorrhagic Septicemia from
overcrowding.  I had hoped after a tetracyline treatment
in the 80 gallon tank that they might improve in the pond,
but I find they appear worse.  I have lowered the pond and was intending to do another terracycline treatment in the pond, my husband thinks this will cause the frogs and birds drinking from the pond to become sick. (I read that even the medication might kill the fish, 2 of my fish did die after the tank treatment, they are large now about 4-5 inches.  The pond is too small to winter them, I was going to move them to a neighbours pond but now realize I should not do that. Should I try the pond treatment?  

Answer
Hello Gail! The first thing is to get the water in your pond healthy. For this you must stop feeding the fish. Test for nitrites and ammonia.
If either of those values is above absolute 0 do partial water changes (don't forget to de-chlorinate the water) until it is.
Add Pond Salt to the water (one pound per 200 gallons). Do not use table salt, it has too many additives and can be poisonous. If you cannot find pond salt, then use solar salt or kosher salt. Make sure it says 99% pure. The salt will help heal the fish if it is not too late.
I am afraid that the tetracycline treatment will be too much for them at this point. Remove any pond plants from the pond when you add the salt (the fish like it just fine, but plants do not do well with too much salt). Make sure to add salt when you do the partial water changes.
And yes, please do not move the fish to your neighbors pond. You would not want to make your neighbors fish sick.
Hope you can save the fish, Gail.

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