pH decreaser (muriatic acid) calculator
PROMuriatic acid (31.45%) to lower pH.
Inputs
Result
Muriatic acid
40.0 fl oz
Cups (8 oz)
5.0
The formula
fl oz ≈ (gal/10k) × (ΔpH/0.2) × 10 × (TA/100).
Worked example
20,000 gal, -0.4 pH at TA 100 = 40 fl oz muriatic.
Frequently asked
›Also lowers TA
Yes — planned acid dosing is how you drop TA.
›Dry acid alternative?
Sodium bisulfate — safer to handle but adds sulfates.