How to Deal with Ulcers on Koi and Goldfish.
Koi and Goldfish are prone to bacterial attack resulting in ulcers. Ulcers on koi or goldfish normally develop in areas where there has been attack by another parasitic disease or a fish has damaged its scales.
Poor water quality is a further reason why ulcers on koi and goldfish develop more readily ... the fish become stressed making them susceptible to attack by pathogens of various kinds.
Before you even consider using any medications, you should be satisfied that your pond conditions and water quality are ideal for Koi, and that they are not causing the problem. Testing for high levels of ammonia and nitrites is a first step.
Treatment of ulcers on koi or goldfish is resorted to after a close check on water quality. If it gets to the stage where you need to medicate the pond as distinct from treating an ulcerated fish in an out of pond situation the first step is to be acutely aware that the dosage is vitally important and this means you need to know your pond volume accurately. You can get my free calculator to work out the volume of any shaped pond by clicking this link. It is an Excel spreadsheet so your need this software on your machine.
More often than not ulcers on individual koi or goldfish will need to be treated outside the pond in a bath.
Ulcer treatment for Koi and Goldfish
This normally done by isolating the fish in a large bowl or tank.
Unless you are skilled in treating open wound ulcers it is best get a vet to carry out the procedure which involves anaesthetizing the fish then cleaning the wound before applying antibiotic compounds or by injection.
The chances of curing ulcers on koi and goldfish is small.
10 Top tips for successfully treating Koi and Goldfish
- Keep an eye open for any behaviour that is not normal (you will have observed your fish and know them well) since this is symptomatic of a fish health problem.
- Learn how to identify the common fish diseases and consider learning how to use a microscope.
- Make sure you know your pond volume accurately and calculate to correct dosage.
- Choose the right treatment for the condition diagnosed and use good quality medications.
- Aeration of the pond is essential during medication.
- Be alert to changes in koi or goldfish behaviour during treatment. Be ready to make water changes and increase aeration.
- Prevent the fish from jumping out of the pond during treatment (use a net)
- Make sure the filter is cleaned and is working the way it is supposed to do
- It is normally best to turn off the UVC while medicating to prevent breakdown of the chemicals circulating in the water. You may need to bypass the filter with some medications that kill bacteria in the filter.
- Frequent testing of water to establish trends and keeping an accurate log can help greatly in diagnosing pond problems.
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