2 lb Dy-Chlor II Granular Bottle
Product Overview
What pool techs reach for when they need rapid chlorine delivery without clouding water or spiking calcium levels.
Formulated with 99.0% Sodium dichloro-s-triazinetrione dihydrate (yielding 56% available chlorine), Regal Dy-Chlor II is a stabilized granular concentrate engineered for fast dissolution and zero residue. Packed in a convenient 2 lb bottle (2 LBS net weight), it reliably serves as a routine sanitizer or fast-acting superchlorination shock across all pool surfaces.
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Benefits & What Makes It Different
Fast-Dissolving Dichlor Formula
Dissolves rapidly without leaving behind cloudy sediment or bleaching vinyl liners when applied properly.
Built-In UV Stabilization
Integrates stabilizer directly into the formula to protect free chlorine from degrading under direct sunlight.
Minimal pH & Hardness Impact
Maintains water balance with near-neutral pH behavior without adding unnecessary calcium hardness to your water.
Product Details
Sodium dichloro-s-triazinetrione dihydrate (99.0%)
Daily maintenance: 1–2 oz per 10,000 gal; Superchlorination: 1 lb per 10,000 gal.
Compatibility
- Never mix with other chlorinating compounds (like cal-hypo or trichlor tabs) or pool acids.
- Safe for use on all pool surface types including plaster, pebble, vinyl liner, and fiberglass.
When To Use This
Pro Tip
In hot, sun-drenched climates where unstabilized chlorine burns off in hours, dichlor delivers immediate protection while keeping calcium hardness steady in the ideal 200–400 ppm range without scaling plaster.
Common Questions & Instructions
Does Regal Dy-Chlor II add cyanuric acid to pool water?
Yes, sodium dichlor adds cyanuric acid (stabilizer). For every 10 ppm of free chlorine added, it contributes roughly 9 ppm of CYA, so track your water testing to keep cyanuric acid in the ideal 30–50 ppm range.
How much Dy-Chlor II should I add per 10,000 gallons?
For maintenance sanitizing to maintain 1–3 ppm free chlorine, broadcast 1 to 2 oz daily per 10,000 gallons. For shock treatment or superchlorination, use 1 lb (half of this 2 lb bottle) per 10,000 gallons.
How long should I wait to swim after applying Dy-Chlor II?
Do not re-enter the pool until water testing shows free chlorine has dropped back into the safe swimming range of 1–3 ppm, which typically takes 4 to 8 hours after shocking.
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.
