Making Dechlorinator – Sodium thiosulfate

How should I make a good dechlorinating solution? I have read about some pretty high doses, like 250 grams in 500ml of water to make a stock solution.
A: First, let’s tell our reader how to get dechlorinating granules, Sodium Thiosulfate:

See below for link to find like, 5 pounds of sodium thiosulfate for overnight delivery.

If you put 130 grams in a liter jug, then add water quantity sufficient to make 1 liter, your stock solution will contain 130 grams/Liter.

Each teaspoonful [5 cc] will contain 650mg active Sodium Thiosulfate. This is a 13% solution.
Simply add 2 drops of the stock solution per 1 gallon of the body of water to be treated . One liter of your solution can treat 10,000 gallons. Over-dosage is virtually impossible.

Another method with the same results is to put 500 grams in a gallon jug, q.s. to 1 gallon then you have the same 650mg per tsp. [13% solution] Add 2 drops of the stock solution per gallon.
One gallon can treat 37,850 gallons or more. 

Why you need dechlorinator (Click)

Making Dechlorinator – Sodium thiosulfate


Dr Erik Johnson is a Marietta, Georgia Veterinarian with a practice in small animal medicine. He graduated from University of Georgia with his Doctorate in 1991. Dr Johnson is the author of several texts on Koi and Pond Fish Health and Disease as well as numerous articles on dog and cat health topics.