My freshwater goldfish has bumps

Question
Hello i have a few freshwater goldfish and my two oldest fish look a little bit odd. One of them has lost a few scales and the other has two bumps on his back. I add Interpet brand Aquarium Treatment Liquisil General Tonic to the tank when needed but they still have the bumps what should I do?? Thank you very much

Answer
Nick,                                                        Lumps , bumps , or tumors are usually a sign of a bacterial infection. I would use a broad spectrum antibiotic like tertracycline. Use it for the whole 7 days....don't forget to remove your carbon. After the treatment do a 25% water change and new filter carbon.