Expert Verified Updated: March 2026

Soda Ash Pool pH Up Calculator

Quickly raise your pool's pH with Sodium Carbonate (Soda Ash). Use the right amount to keep your sanitizer working efficiently and your water comfortable.

Quick Conclusion
To raise pH from 7.2 to 7.5 in a 10,000-gallon pool, you need approximately 6-12 oz of Soda Ash (Sodium Carbonate). Soda Ash has a significant impact on Total Alkalinity as well.

Technical Comparison

pH Target Increase Soda Ash (10k Gal) TA Increase (est.)
+0.2 units 6 oz +4.5 ppm
+0.4 units 12 oz +9.0 ppm
+0.6 units 18 oz +13.5 ppm

Actionable Steps

Pro-Tip

Scaling Risk: High pH can cause calcium to "fall out" of suspension, causing scale on your salt cell or pool walls. Always check your LSI (Langelier Saturation Index) before raising pH or Alkalinity.

Frequently Asked Questions

Soda Ash vs Baking Soda?

Soda Ash is for pH; Baking Soda is for Alkalinity.

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