pH increaser (soda ash) calculator

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Soda ash (sodium carbonate) to raise pH.

Short answer: oz ≈ (gal ÷ 10,000) × (ΔpH ÷ 0.2) × 6 (varies with alkalinity). 20,000 gal, +0.3 pH = ~18 oz soda ash. Enter your measurements above and the ph increaser (soda ash) calculator returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.

What do you need to measure?

What is the answer?

Soda ash
18.0 oz
+0.30 pH
Pounds
1.12

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How does the ph increaser (soda ash) calculator work?

oz ≈ (gal ÷ 10,000) × (ΔpH ÷ 0.2) × 6 (varies with alkalinity).

What does a worked example look like?

20,000 gal, +0.3 pH = ~18 oz soda ash.

What do people ask most?

›Also raises TA?

Yes — adds ~5 ppm TA per 6 oz per 10k gal.

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Where can you learn more?

Read field notes on estimating and materials, or browse every calculator we make.

What should you read before you order materials?

Field notes from real jobs that explain the numbers behind this calculator.