Aquarium Salt Dose Calculator
Enter your water volume and dose per liter to find how much aquarium salt to add.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
Aquarium salt (sodium chloride, not iodized table salt) is dosed by grams per litre of tank water, used to help treat certain freshwater fish diseases and parasites, ease osmotic stress, and support gill function in some species and situations. Because overdosing can harm salt-sensitive fish and live plants, this calculator converts your target dose per litre and total tank volume into a precise gram (and tablespoon) amount rather than leaving it to guesswork.
It's a routine reference for freshwater aquarium hobbyists treating a quarantine or hospital tank, adding a general tonic dose, or following a specific salt-based treatment protocol from a fish disease guide, where getting the concentration right matters for both effectiveness and the safety of sensitive tankmates.
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