Sodium Thiosulfate Crystals

Dechlorinator: Sodium Thiosulfate Crystals

Regular price $3.95
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Sodium Thiosulfate: This is the active ingredient that removes chlorine found in a large number of chorine removal products. So, if all you need is cheap chlorine removal, this is the product to use. It can be overdosed without harm. In fact, it is a very effective Redox Reducer, eliminating oxidizing free radicals from the water. Overdosing is actually a good thing. Does not remove chloramines. If you have chloramines, it will break the chlorine/ammonia bond, leaving the ammonia to be handled by your bio filter.

Dose: Dissolve 1 lb of crystals into 1/2 gallon of distilled water and then use this solution at 1 drop per gallon of tap water to dechlorinate the tap water. 

The Dechlorinator: Sodium Thiosulfate Crystals is one of our favorite items. We think you'll love it.

Inventory Last Updated: Jun 18, 2024

Customer Reviews

Based on 6 reviews
Jeff Weston
What I expected

This kind of crystal was given to me when we restored our koi pond. Our pond guy said that we just need 20 crystals for a pond our size. That has always done the trick. When we ran out of the crystals, it was hard to find actual crystals. We did not want powder. In any case, these crystals are the real deal. It is everything that we need and nothing we don't. They are inexpensive and effective.


Mixed a batch in a jar and it does remove the chlorine. Much cheaper than buying stuff at the store. Thanks!

Dechlor crystals

Worked great and saves $$$$

Kenny Morris

Wow, wish I had found this years ago works great. It’s a fraction of the cost of commercial de chlorinators. Will be ordering several more.


Product works awesome for its intended purpose, there are things you might need to know about your water source, but this website explains so just read