What's the white cotton stuff in my fish tank and how do I remove it?

Related Answers from Veterinarians

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  Answered By Angel Alvarado, LVT

  Licensed Veterinary Technician

  Published on November 21st, 2017

  By your description, it could be a fungal infection. This can occur with poor water quality or stress. It can also be introduced I to a tank by new additions. Treatment is relatively simple and involves providing adequate water quality. Rinse filter media with tank water, not tap water, and perform a partial water change. Use only aged or conditioned water that is temperature matched to prevent further stress or shock. Common antifungal medications include Malachite Green, Jungle Labs Fungus Eliminator, Anti-Fungus Remedy (Interpet) or PimaFix (API). You can purchase these products at your local pet or fish store. Follow label directions. If just the one fish is affected, consider separating it and treating it in a hospital tank. Return it to the main tank once treatment is complete.

  

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  Answered By Todd Cecil

  Veterinarian

  Published on January 21st, 2020

  Thanks for reaching out about Ares and including photos. White cottony growths are often associated with fungal infections, which are normally secondary to other problems. Wounds, suboptimal water quality and parasites could be the initial cause. Test and correct water quality. A veterinary visit is recommended to assess and provide a diagnostic/treatment plan. There are commercially available fungal treatment available but use with caution, especially without getting a confirmed diagnosis first. If aggression from other fish suspected, might need to be separated. Good luck.

  

  1Pet Parents found this answer helpful