pH increaser (soda ash) calculator
PROSoda ash (sodium carbonate) to raise pH.
Inputs
Result
Soda ash
18.0 oz
+0.30 pH
Pounds
1.12
The formula
oz ≈ (gal ÷ 10,000) × (ΔpH ÷ 0.2) × 6 (varies with alkalinity).
Worked example
20,000 gal, +0.3 pH = ~18 oz soda ash.
Frequently asked
›Also raises TA?
Yes — adds ~5 ppm TA per 6 oz per 10k gal.