---
title: "What Is Water balance? Pool Glossary | Marina Pool Services"
description: "Water balance is the right mix of pH, alkalinity, hardness, and stabilizer for safe, clear water."
url: https://marinapool.multisites.ai/glossary/water-balance
publisher: Marina Pool Services
phone: +1-817-896-1120
quote: https://marinapool.multisites.ai/contact
---

Water chemistry

# Water balance

Water balance is the right mix of pH, alkalinity, hardness, and stabilizer for safe, clear water.

Balanced water is easier on your swimmers, your plaster, and your equipment. When one number drifts, the others usually follow. High [pH](https://marinapool.multisites.ai/glossary/ph) weakens chlorine. Low pH eats metal. Hard water leaves [scale](https://marinapool.multisites.ai/glossary/scale).

The main numbers are pH, [total alkalinity](https://marinapool.multisites.ai/glossary/total-alkalinity), [calcium hardness](https://marinapool.multisites.ai/glossary/calcium-hardness), and [cyanuric acid](https://marinapool.multisites.ai/glossary/cyanuric-acid), along with sanitizer. Test weekly in swim season, and after big storms. Fix alkalinity first, then pH. Ask your pool pro to explain each reading, so you know what to change. The [Langelier index](https://marinapool.multisites.ai/glossary/langelier-saturation-index) gives one score for the whole picture.

[Marina can helpPool Maintenance Services](https://marinapool.multisites.ai/our-services/pool-maintenance-services)

## Related terms

-   [pH](https://marinapool.multisites.ai/glossary/ph)
-   [Total alkalinity](https://marinapool.multisites.ai/glossary/total-alkalinity)
-   [Calcium hardness](https://marinapool.multisites.ai/glossary/calcium-hardness)
-   [Langelier Saturation Index](https://marinapool.multisites.ai/glossary/langelier-saturation-index)

## Need a hand with your pool?

Call or text and tell us what your pool needs. Estimates are free for qualifying services, and same-day estimates are possible when the schedule allows.

[Call (817) 896-1120](tel:+1-817-896-1120)[Get a quote](https://marinapool.multisites.ai/contact)

![A pool technician working on an equipment pad](https://marinapool.multisites.ai/_astro/technician-equipment-pad.BW5xZMNY_Zum1K5.webp)