Kidney damage is more likely to occur in fish from soft water (tetras, Corydoras, angelfish, gouramis, loaches) that are exposed to high levels of salt for an extended period of time, and is not an issue with livebearers, rainbowfish or other salt tolerant species. Keep the salt level like this for at least 2 weeks but no longer than 4 weeks otherwise kidney damage can occur. If you only have livebearers (guppies, platies, swordtails, mollies), goldfish or rainbowfish in the tank you can double that dose rate, so you would add 4 heaped tablespoons per 20 litres. You can add rock salt (often sold as aquarium salt), sea salt or swimming pool salt to the aquarium at the dose rate of 2 heaped tablespoon per 20 litres of water. These are normally caused by dirty environmental conditions (dirty gravel, filter and lack of water changes).ĭo a 75% water change and gravel clean the substrate each day for a week.Īdd salt to the tank now and with every water change for the next couple of weeks. When fish start to spiral or swim around in circles, it is caused by a bacterial or protozoan infection in the brain. Whirling disease is stubborn, so you may want to consider this." It can be combined with Furan 2 and Metronidazole for stubborn bacterial infections. While here in the States we can buy this drug in pet stores and online, in the UK it is only available by prescription from a vet. You can also treat the entire pond, but that does get expensive. You can either place the fish in a hospital tank (a large RubberMaid tote works). Only one drug has been found to ever work: kanamycin. Treatment has to be carried out for an extended time, usually about 3 months. It is only rarely successful, but there have been cases of a cure. The other option is to try to treat the fish. Rarely, a fish will seem to recover, but that fish will always carry the parasites. You could put them in a big RubberMaid tote or a child's plastic wading pool with a filter running, and simply wait for them to pass away. That greatly increases the chances of more fish being infested. If they die in your pond, millions of the little parasites will be released from their bodies almost immediately upon death. The affected fish do need to be removed from the pond. If you don't want to euthanize, there are still two choices. Most people euthanize fish when they begin to exhibit whirling. It is thought to be carried in tubifex worms and possibly other similar foods, whether live or freeze-dried, but of course in a pond, it could have been brought in through many different organisms. Whirling disease has become fairly common in koi, goldfish, and tropical fish. Emaciation commonly occurs in most fish that are affected as the infection progresses. Some fish that get it will twirl in circles. These parasites infest the tissues around the inner ear and the brain, interfering with balance mechanisms. "I'm so very sorry to give you bad news.Whirling disease is caused by Myxobolus cerebralis, a parasite. Whether you want to rely on this information is up to you though the original poster does sound knowledgeable. I found this response on another site and will quote it here.
I had a tetra that had that issue and he soon died.
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