Sodium thiosulfate for dechlorination of tap water during water changes or anytime tap water is added to the pond or aquarium.

One teaspoon of this solution treats at least 25 gallons; one cup treats 1200 gallons; entire gallon treats 19,000 gallons. Appropriate dosages will vary with amount of chlorine or chloramines in the tap water of your area; when in doubt, use a slightly larger amount of Chlor-gon.

Best when used within one year.

Only sold in two bulk size options

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Additional information


1lb bag, 2lbs Bulk

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