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Phone: 336-996-3200
Fax: 336-996-8861

Treating Koi with Salt

1) Should I use salt in my holding systems?

Salt is an excellent start in regards to controlling most of the common microscopic parasites that can harm koi & goldfish. At the correct dosage it will control Ich, Chilodinella, Costia and Trichodina.

It protects fish from poisonous nitrites that accumulate early in the season when filters are not yet mature.

Salt acts as a general tonic for fish under stress from shipping.

*There are some Japanese strains of Costia and Trichodina that have built up resistance to salt, but we have not seen those on our fish.

2) What level do you recommend?

We recommend that you keep levels in your sales tanks between .3 and .5% which is equal to approximately 3 to 5 pounds per 100 gallons.

3) What kind of salt should I use?

Any non-iodized salt that does not contain the anti-caking agent Yellow Prussiate of Soda or YPS. It has been found to be harmful to koi and goldfish. Try our convenient Salt available in two sizes.

4) How do I measure the salt level?

Inexpensive salinity meters are available for about $80 - $90. Drop-type test kits are available for much less.

5) If I keep my tanks salted at this level, will the fish have a problem adjusting to the non-salted water in my customers ponds?

Going from salted water to unsalted water will not be harmful to koi or goldfish.

6) Should I recommend that my customers keep salt in their ponds?

Healthy ponds with adequate filtration, good water quality, and uncrowded conditions should not need salt on a continual basis. It can be used to treat disease issues, but be aware that it will harm many common pond plants. Salt levels at .1% in the spring would detoxify nitrites that tend to build up as filters are cycling.

7) Are there drawbacks to using salt?

It will harm plants commonly used in water gardens

It is inadvisable to use salt in combonation with Formalin. Formalin mixed water containing more than .1% salt can be harmful to koi & goldfish.

In pond situations be aware that slat may kill algae, causing a drop in dissolved oxygen from the decay of the algae. Be sure circulation is adequate.

Trapdoor snails cannot tolerate salt.