Sirona™ Spa Down
Keep your spa water balanced and comfortable with Sirona™ Spa Down. This granular balancer lowers both pH and total alkalinity in spa and hot tub water, ensuring sanitizers work more effectively, equipment stays protected and water remains sparkling and inviting.
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