Sodium Thiosulphate – AES
Sodium thiosulphate is the main compound in most chlorine neutralizers. Anytime municipal water must be used for aquaculture, use sodium thiosulphate (or our other dechlorinating formula) for instant neutralization of chlorine but not chloramines. Dosage rates vary with the pH of the water, but rates between 1.6 to 2.6 parts sodium thiosulphate per one part chlorine should be adequate. Excess levels of sodium thiosulphate up to 100 ppm will not harm fish.
Product Specifications
| Parameter | Value |
|---|---|
| Chemical Name | Sodium thiosulphate |
| Primary Use | Chlorine neutralization in aquaculture |
| Effective Against | Chlorine only (not chloramines) |
| Safe Concentration | Up to 100 ppm |
| Recommended Dosage Range | 1.6–2.6 parts per part of chlorine |
FAQ
Can sodium thiosulphate be used to neutralize chloramines?
No, sodium thiosulphate only neutralizes chlorine. It is ineffective against chloramines.
What is the safe concentration of sodium thiosulphate in water?
Sodium thiosulphate is safe up to 100 ppm in water.
Does the dosage depend on water pH?
Yes, dosage rates vary with the pH of the water.


Karen Quinn –
Used it to treat tap water before adding to fish tank. Worked quickly to remove chlorine without harming the fish. Followed the dosage guide and kept the water safe for my betta.
Nathan Jones –
Good for removing chlorine from municipal water. A bit slow to act compared to other dechlorinators, but effective. No fish issues after use.
Joshua McGrath –
Perfect for my reef tank. Neutralized chlorine instantly and didn’t cause any stress to the corals or fish. Easy to measure and use.