SpaGuard Calcium Hardness Increaser (12oz)

📌 What It’s For:
Raises calcium hardness in spa water to prevent corrosion of equipment, etching of surfaces, and foaming caused by soft water.

✅ How to Use It:

• Dose: 1 tablespoon (0.5 oz) per 100 gallons raises hardness by ~25 ppm

• Apply by: Broadcasting evenly over the surface with circulation running

• Wait Time: 4 hours before retesting and rebalancing if needed

• Frequency: As needed, especially after draining and refilling

⚠️ Safety Notes:

• Avoid exceeding 400 ppm to prevent scaling

• Always test water before adjusting — only raise if below recommended range

💬 Pro Tip:
Essential after a fresh fill or when using softened water. Balanced calcium helps maintain clear water, extend equipment life, and reduce chemical demand.