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What's the right amount of aquarium salt to treat ich in my fish?

Updated On September 23rd, 2025

When using aquarium salt to help treat ich how much do I use? The box says 1 teaspoon per gallon and everything that I have read says 1-5 tablespoons per gallon. I've raised my temp up to 82 so far.

2 Answers

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on June 30th, 2017

If your fish are salt tolerant, use one teaspoon of plain aquarium salt per gallon of water to treat Ich. Dissolve it in a cup of tank water then pour it slowly into the tank. Increase water temperature to about 85-86 F and hold for 10 days. Vacuum the substrate once your fish lose the "dots".

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    Answered By Angel Alvarado, LVT

    Licensed Veterinary Technician

    Published on January 31st, 2019

    First, perform a partial water change, vacuum gravel thoroughly and wipe down any tank furniture. This is critical because clean water is the cornerstone for treatment and recovery. Use only conditioned water that is temperature matched to prevent stress or shock. Next, you can use any one of the commercial ich medications, such as Ich Guard (Tetra), Super Ick Cure (API) or Rid Ich Plus (Kordon). These can be found in the Aquarium section of the local Petco. Follow label directions carefully. This method will typically work with most fish. Another option would be to use plain aquarium salt ( NOT table or Epsom salt). Dissolve 1 tablespoon of salt per 5 gallons of water in a cup or two of tank water and gently pour it into the tank. At the same time, gradually increase the water temp to about 86 F. Hold it there for 14 days. The warm temps will speed up the life cycle of the parasite and the salt will kill it. Afterwards, gradually reduce water temp and perform another partial water change. You can break down the tank, but you would need to cycle the tank all over again. This can take weeks. To prevent infection, purchase only healthy fish. ideally, they should be quarantines in a separate tank for at least 2 weeks before being added to the main tank. Keep the tank clean, monitor chemistry and perform regular water changes.

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