Sirona™ Spa Down
Clear, Comfortable Water Made Simple
- Dual-action product lowers both total alkalinity and pH
- Helps prevent scale, cloudiness and discolored water
- Compatible with all sanitizers
Why You'll love Sirona™ Spa Down
- Dual-action formula
- Lowers pH and alkalinity to help your sanitizer work better and your equipment last longer
Additional Information
Directions for Use
- Use when pH is above 7.8
- Add ¼ oz. (1 ½ tsp.) per 500 gallons directly to the spa with the circulation system running
- Retest after 3 hours and repeat treatment if necessary
Frequently Asked Questions
Q: What does Sirona™ Spa Down do?
A: It lowers both pH and total alkalinity in spa water, helping create balanced conditions for sanitizer effectiveness and bather comfort.
Q: When should I use Spa Down?
A: Use whenever your spa pH rises above 7.8. High pH reduces sanitizer efficiency and can cause cloudy water or scale.
Q: How long after adding Spa Down should I retest?
A: Retest your spa water after 3 hours. Add more if needed until water is properly balanced.
Q: Is Spa Down safe for my spa equipment?
A: Yes. In fact, maintaining the correct pH protects your spa equipment from scale buildup and staining.
Q: Does Spa Down affect water clarity?
A: Yes. Keeping pH in range prevents cloudy water and helps maintain sparkling clarity.
Q: Can Spa Down be used with any sanitizer?
A: Yes, it is compatible with bromine, chlorine and mineral sanitizer systems.
Q: How often will I need to use Spa Down?
A: Frequency depends on usage and water conditions. Test your water 2–3 times per week and adjust as needed.
Q: Can I add Spa Down directly to the water?
A: Yes, add it directly to spa water with the circulation system running — no pre-dissolving required.
Benefits of Regular Use
Water Quality
- Keeps water clear and comfortable
- Supports sanitizer efficiency for safer soaking
Maintenance
- Prevents scaling and discoloration
- Extends spa and equipment life
Convenience
- Easy-to-use granules for quick adjustments
- Dual-action control of both pH and alkalinity
Chemical Specifications
- Active Ingredient: Sodium bisulfate
- pH Impact: Lowers pH and alkalinity
- Form: Fine, free-flowing granules
- Color/Odor: White, odorless
- Solubility: Fully soluble, dissolves quickly
- Stability: Stable under normal dry storage conditions
Storage & Safety Guidelines
- Store in a cool, dry location away from moisture
- Keep container tightly closed when not in use
- Do not mix with other spa chemicals
- Avoid inhaling dust during application
- Keep out of reach of children and pets