1 lb Dy-Chlor II Sanitizer Bag
Product Overview
When fast dissolution and neutral pH chlorination are required without raising calcium hardness, pool techs reach for Regal Dy-Chlor II.
Regal Dy-Chlor II contains 99.0% sodium dichloro-s-triazinetrione dihydrate (providing 56% available chlorine) in a single 1 lb treatment pouch. This fast-dissolving sodium dichlor formula reliably restores free chlorine levels without clouding water or spiking pH levels. Packaged in a durable 1 LBS bag, this stabilized dichlor granular chlorine is a proven choice for vinyl, fiberglass, and plaster pools needing rapid sanitization or routine superchlorination.
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Benefits & What Makes It Different
99.0% Pure Sodium Dichlor
Delivers 56% available chlorine with a near-neutral pH, preventing the sharp pH swings common with calcium-based shock treatments.
Fast-Dissolving & Zero Calcium
Dissolves rapidly upon broadcasting across the pool surface without leaving residue or driving calcium hardness past the recommended 200–400 ppm range.
Built-In UV Stabilization
Contains cyanuric acid to shield active free chlorine from degradation under direct sunlight, helping hold steady 1–3 ppm residual levels.
Product Details
Sodium dichloro-s-triazinetrione dihydrate 99.0% (56% Available Chlorine)
1 lb per 10,000 gallons for superchlorination / shock treatment
Compatibility
- Never pre-dissolve in a bucket or mix with other chemicals (especially trichlor tabs or cal-hypo).
- Wait until free chlorine drops into the 1–3 ppm range before swimming (typically 8–12 hours).
When To Use This
Pro Tip
Because sodium dichlor dissolves almost instantly, broadcast it directly over deep-end return jets. In high-heat regions where sunlight burns chlorine quickly, test your stabilizer monthly to keep cyanuric acid in the 30–50 ppm sweet spot.
Common Questions & Instructions
How much Regal Dy-Chlor II should I add to my pool?
For routine superchlorination or shocking, broadcast 1 lb of Regal Dy-Chlor II per 10,000 gallons of pool water directly around the perimeter with the circulation pump running. Always keep free chlorine between 1–3 ppm and pH between 7.2–7.6.
Will using sodium dichlor raise my cyanuric acid levels?
Yes, sodium dichlor adds approximately 0.9 ppm of cyanuric acid for every 1.0 ppm of free chlorine it delivers. Regularly monitor your CYA levels to ensure they stay within the target 30–50 ppm range.
Is this 1 lb bag of Dy-Chlor II safe for vinyl liner pools?
Yes, because Regal Dy-Chlor II is completely quick-dissolving, it will not sit on the pool floor and bleach surfaces when broadcast evenly, making it safe for vinyl liners, fiberglass shells, and painted pools.
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.
