My goldfish has black marks from ammonia burns. How do I treat him?

Question

I had put an aquatic plant in my fish tank because I was told he would like it and eat it, but now he has black marks all over his body. I searched and found that it is chemical burns from ammonia due to the plant. How can I help get rid of the marks on him?? Pet's info: Fish | Gold Fish

Angel Alvarado, LVT · Accepted Answer

The ammonia spike was likely a result of decaying plant matter. As long as you maintain pristine water quality, Goldilocks should heal. Use a filter that is rated for at least twice the volume of the tank. Since goldfish produce a larger than average bio-load (waste), you may need to perform partial water changes regularly in addition to filtration. Use only conditioned water that is temperature matched to prevent stress or shock. Goldfish are cold water fish and do best between 65 F and 72 F. Use an additive, such as Stress Coat, to promote healing. A home test kit should also be used to monitor chemistry. Aim for an absence (0 ppm) of ammonia and nitrites with nitrates at 20ppm or less. If you don't have a teat kit, the local Petco may test water for free or for a small fee.

My goldfish has black marks from ammonia burns. How do I treat him?

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