June 18, 2026
Posted By Rachel Cherem
The Complete Guide to Pool Shock: Types, How-To, and When to Use It
Pool shock is a concentrated oxidizing treatment, most commonly chlorine-based, that temporarily raises free chlorine levels well above normal maintenance range. It destroys bacteria, kills algae, breaks down chloramines, and clears cloudy water. Most pool owners shock their pool every one to two weeks during the swim season.







