
Regal Chlorine and Bromine Neutralizer Bottle 1lb
Product Overview
A proven choice for quickly correcting chemical overdoses without the need for a partial drain and refill.
This 1 LB bottle of Sodium Thiosulfate is what pool techs reach for when chlorine levels exceed the safe 4.0 ppm threshold. Regal Chlorine and Bromine Neutralizer provides a controlled way to lower sanitizer levels after a heavy shock treatment or a chlorinator malfunction. Unlike generic reducers, this formula is specifically refined to assist with metal stain treatments by clearing residual oxidizers that can interfere with sequestering agents.
Benefits & What Makes It Different
Rapid Sanitizer Reduction
Quickly lowers excessive chlorine or bromine levels to restore a safe swimming environment within minutes.
Stain Treatment Support
Essential for use before applying metal stain removers, as high chlorine levels can neutralize the effectiveness of stain-fighting chemicals.
Cost-Effective Correction
Eliminates the need to waste water and expensive chemicals by draining the pool to dilute high sanitizer concentrations.
Product Details
Sodium Thiosulfate 100%
1 lb per 10,000 gallons to lower chlorine by approximately 10 ppm
Compatibility
- Do not mix directly with acids or other pool chemicals in the same bucket.
- Safe for all pool finishes including plaster, vinyl, and fiberglass.
When To Use This
Pro Tip
In high-UV regions like the Southwest, chlorine naturally degrades quickly; however, if you have high CYA levels, the chlorine won't burn off as fast, making this 1 LB bottle a necessary tool for immediate correction after an overdose.
Common Questions & Instructions
How much Regal Chlorine and Bromine Neutralizer do I need for my pool?
For a standard 10,000-gallon pool, adding 1lb of this neutralizer will typically lower the chlorine level by approximately 10 ppm, though you should always test in increments to avoid bottoming out your levels.
Can I swim immediately after adding this neutralizer?
You should wait at least 30 minutes for the product to circulate through the filtration system and then re-test the water to ensure chlorine is between 2.0 and 4.0 ppm before allowing swimmers back in.
Does this product affect my pool's pH or Cyanuric Acid levels?
This neutralizer does not add stabilizer (CYA) or calcium hardness, making it a clean solution for lowering sanitizer without drifting other critical water balance parameters that could cause scaling or cloudiness.
Delivered today to your DFW neighborhood
Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.



