Our expert says:
Your Koi could be suffering from a bacterial or viral condition.
It is suggested that you test the water for levels of ammonia, nitrites and nitrates. Results should indicate ammonia and nitrites=-0- and nitrates 20 ppm or lower.
If the water is normal then it is ok to add some pond salt as this is know to act as a general tonic and assists in removing toxins. Following this you can add Tetra Pond Fish Treatment (or equivalent) which is designed to treat a variety of ailments and will not harm the other pond inhabitants.
If the lumps are viral in nature then the Tetra treatment will be inert but if they're bacterial in nature both the Tetra treatment and salt should effect a cure. There are no viral medications available to treat fish. Many viruses will go away on their own as is the case with humans.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
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