Pool pH Guide
pH affects bather comfort, equipment, and how well chlorine works. Keep it in range before chasing small chlorine changes.
What pH controls
pH measures how acidic or basic water is. Low pH can corrode metal and irritate skin; high pH can drive scale and weaken chlorine.
Ideal range
Target roughly 7.2–7.6 for pools unless your kit or plaster notes otherwise.
Acid and base
Acid (e.g. muriatic or dry acid) lowers pH; soda ash or borates (per label) can raise it. Move slowly and retest—especially when alkalinity is out of range.
Calculator
All pH-related pages
- Hot Tub Ph Calculator
- Pool Cyanuric Acid Calculator
- Pool Ph Calculator
- Why Ph Affects Chlorine
- Adjust pH 6.8 → 7.2
- Adjust pH 7.8 → 7.4
- Adjust pH 7 → 7.4
- Adjust pH 8 → 7.5
- Typical range: 1–3 ppm chlorine
- Recommended pH: 7.2–7.6
- Test water regularly
WaterBalanceTools provides practical calculators and guides for pool and hot tub water chemistry. These tools are designed to help maintain safe chlorine, pH, and total alkalinity within a healthy water balance.