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June 8, 2026

Aquarium Salt Calculator

%
70% (heavy decor) 100% 100% (bare tank)
gal
Leave 0 if no sump.
Dosage Results
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Salt (grams)
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Tablespoons
1 tbsp ≈ 17 g
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Teaspoons
1 tsp ≈ 5.69 g
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Concentration
% salinity
Concentration may harm sensitive plants. Consider removing plants or reducing dose.
0%MildModerateStrong1%+
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Important: Use only pure aquarium salt (sodium chloride, no anti-caking agents or iodine). Dissolve in a separate container before adding. Avoid use with scaleless fish (corydoras, loaches) and many live plants. Increase concentration gradually over 24–48 hours.