What ratio of water to acid should you use to clean your pool cell?

To clean a pool cell, a common ratio of water to acid (usually muriatic acid) is 4:1, meaning four parts water to one part acid. Always add acid to water, never the other way around, to prevent splashing and reactions. It's important to follow the manufacturer's recommendations for your specific pool cell, as concentrations may vary. Always wear protective gear and ensure proper ventilation when handling acids.