Sirona Chlorinating Granules

Specifically formulated for spas and hot tubs, Sirona™ Chlorinating Granules provide a concentrated 2-in-1 solution that both sanitizes and shocks. This fast-dissolving treatment goes to work instantly, keeping your water clear, clean and soothing — so your spa is always ready when you are.

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Sirona Spa Care Chlorinating Granules Back of Pack
Sirona Spa Care Chlorinating Granules Front of Pack
Sirona Spa Care Chlorinating Granules Back of Pack

Available size(s)
2 lbs. & 4 lbs.

Product Image

Sirona Chlorinating Granules

Specifically formulated for spas and hot tubs, Sirona™ Chlorinating Granules provide a concentrated 2-in-1 solution that both sanitizes and shocks. This fast-dissolving treatment goes to work instantly, keeping your water clear, clean and soothing — so your spa is always ready when you are.

Instant Clarity, Fast-Dissolving Care

  • 2-in-1 sanitizer and shock treatment
  • Dissolves instantly and starts working fast
  • Keeps spa water clean, clear and relaxation-ready
  • Effectively controls odors and organic contaminants

Available size(s)
2 lbs. & 4 lbs.

Why You'll love Sirona™ Chlorinating Granules

  • Simplifies spa care with one powerful product

Additional Information

Directions for Use

As a Sanitizer

  • Add ½ oz. per 500 gallons daily (or as needed)
  • Maintain a residual chlorine level of 2–3 ppm

As a Shock

  • Add 1 oz. per 500 gallons weekly
  • Helps control odors and maintain water clarity

Frequently Asked Questions

Q: How do I add Sirona™ Chlorinating Granules to my spa?
A: Simply broadcast evenly over the water surface. No pre-dissolving required.

Q: Is this product safe for spa equipment?
A: Yes, it’s designed specifically for spas and hot tubs and will not damage equipment when used as directed.

Q: How soon can I use my spa after treatment?
A: Once chlorine levels return to 3 ppm or below — usually within 15–30 minutes depending on circulation.

Q: Can I use this product with saltwater spas?
A: Yes, it may be used as a supplemental sanitizer or shock during heavy spa use.

Q: What’s the difference between sanitizer and shock use?
A: As a sanitizer, it maintains daily protection against bacteria. As a shock, it oxidizes organic waste, restoring clarity and freshness.

Q: Can I combine this with other spa treatments?
A: Yes, but always follow manufacturer instructions for other products to ensure compatibility.

Q: Will chlorinating granules affect the pH balance of my spa water?
A: This product has a near-neutral pH, so it typically causes minimal impact on your spa’s overall pH balance.

Q: How often should I test my spa water when using chlorinating granules?
A: It’s recommended to test your water at least 2–3 times per week, and more frequently with heavy spa use, to maintain proper chlorine and pH levels.

Benefits of Regular Use

Water Quality

  • Keeps water clear, clean and inviting
  • Eliminates bacteria, odors and organic waste

Maintenance

  • Reduces buildup of oils, lotions and residues
  • Supports longer spa and equipment life

Convenience

  • One product for both daily sanitizing and weekly shock treatment
  • Dissolves quickly — ready for use within minutes

Chemical Specifications

  • Active Ingredient: Sodium Dichloro-s-Triazinetrione Dihydrate (Dichlor) — 99%
  • Available Chlorine: 55–62%
  • pH (1% solution): 6.0–7.0
  • Form: Fine, free-flowing granules
  • Color: White to off-white
  • Odor: Mild chlorine scent
  • Solubility: Fully soluble; rapid dissolution
  • Stability: Stable under normal storage; degrades with moisture or direct sunlight

Storage & Safety Guidelines

  • Store in a cool, dry, well-ventilated area away from sunlight and moisture
  • Keep container tightly closed when not in use
  • Do not store near acids, ammonia or combustible materials
  • Keep out of reach of children and pets