Why use Borax instead of Soda Ash?

Borax raises pH without significantly increasing Total Alkalinity, making it ideal for pools that have high alkalinity but low pH.

Borax Pool pH Calculator

Raise your pool's pH without causing a massive spike in alkalinity by using 20 Mule Team Borax.

Why Use Borax to Raise pH?

Standard "pH Up" chemicals are usually Soda Ash (Sodium Carbonate). While effective at raising pH, Soda Ash also significantly raises Total Alkalinity. Borax (Sodium Tetraborate) raises pH with less than half the alkalinity impact of Soda Ash.

Is Grocery Store Borax Safe for Pools?

Yes. 20 Mule Team Borax is a common household laundry booster that is 100% Sodium Tetraborate. It is safe for all pool finishes (plaster, liner, fiberglass).

Pro Tip: If your alkalinity is also low, use baking soda instead of Borax. Check the exact dose with our Baking Soda Alkalinity Tool.

Frequently Asked Questions

Does Borax increase Total Alkalinity?

Borax has a minimal effect on alkalinity compared to Soda Ash or Baking Soda. This allows you to raise pH while keeping your alkalinity levels stable.