Pond Salt Calculator

Calculate the exact amount of salt needed for pond treatments, parasite control, or nitrite protection.

Pond Details

Pond Volume (Gallons)

Target Salinity (%)

Common Levels:

Salt Requirement

Weight in Pounds8.35lbs

Weight in Kilograms3.79kg

Salinity Comparison (%)

CRITICAL: Salt does NOT evaporate. Only add salt if you have replaced water or have never added it. Dissolve in a bucket first.

Use non-iodized pond salt (Pure NaCl).

Salt in the Pond

Salt is a versatile tool for koi and goldfish health. It aids osmoregulation (balancing internal fluids), reduces stress, and protects fish from nitrite toxicity. However, it should be used judiciously, as high salt levels can harm aquatic plants.

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Pro Tips

Nitrite Protection: Brown Blood Disease causes fish to suffocate. Salt (just 0.1%) prevents nitrite from binding to blood cells.
Slime Coat: Salt stimulates the fish's natural slime coat, which is their first line of defense against bacteria and parasites.
Measurement: You must know your exact pond volume. Overdosing salt is hard to fix without massive water changes.
Plants: Water lilies and hyacinths hate salt. Keep levels below 0.15% if you have them.

Fun Facts

"Koi can live to be over 200 years old (the oldest, Hanako, lived to 226!)."
"Salt is the oldest medicine in the hobby and parasites are less likely to build resistance to it than chemicals."
"A 0.3% salt solution is often called the 'sweet spot' for treating Ich without harming most fish."

Formula: Salt (kg) = Volume (L) × (Percentage / 100)

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