The treatment tank does not need to be as big as your permanent tank. A tank that is 10–20 gallons (38–76 L) is typically plenty big for pet fish. The fish will only be there during treatment, which could be a few weeks, so they don’t need as much room as normal. [3] X Research source
Even if all of your fish are infected, you should treat them in a temporary tank so that you can give their permanent tank a thorough cleaning while you are treating them.
Commonly suggested treatments include malachite green, potassium permanganate, formalin, and povidone iodine solutions. [4] X Research source In most cases, it’s easiest to give a fish medication with this type of bath treatment. This is especially true when treating an infection the exterior of the fish’s body. Holistic remedies rarely work with fish, so strong antibiotics/medicines are usually required.
Some fish, such as tetras, do not tolerate salt baths very well. However, other common fish, such as goldfish, tolerate it well. [5] X Research source You can continue to give your fish a salt bath every other day for a few weeks after recovery to ensure the infection is completely gone.
When putting your fish into the main aquarium, watch carefully in case your other fish show aggression. Monitor all other fish for signs of fungal growth or abnormal/uncharacteristic behavior during and after treatment.
Feed your fish 2-3 times a day depending on size, species, and age. Once you have a new feeding routine established, do not change it or add food, as it can stress out an already stressed and possibly bloated fish.
Don’t put your fish back in the tank until it is back up to its standard temperature. Doing a thorough cleaning once a month will keep excess organic matter, such as extra food and feces, from building up in the water.
In many cases, fungal infections occur at the sight of previous infections or injuries to the fish. Once the surface is injured and broken, the fungus can easily take hold. Fungal infections are usually caused by an injury, bacterial infection, or parasitic infection. [6] X Trustworthy Source State of Indiana Official site for state-approved sources related to life in Indiana, including laws, services, and culture Go to source
For example, if your fish has parasites, you should give it medicated food to eliminate the infection. [7] X Research source
With a fungal infection your fish will develop a white film or white patches on parts of its body. This may seem like general discoloration, but a closer look often reveals a white, fungus-like growth.
They may also stop eating if they are very ill. Spotting changes in behavior is typically easiest if you assess the health of your fish on a daily basis. If you know how your fish usually acts, you catch sickness quickly.
