How often should I shock a swimming pool?

Weekly during the swim season for outdoor pools and after any heavy bather load event.

Is non-chlorine shock as effective as chlorine shock?

It oxidises waste effectively but does not disinfect. Use chlorine shock for any cloudy water emergency, non-chlorine shock for routine weekly maintenance.

Can I swim immediately after a shock dose?

Wait until free chlorine drops below 5 ppm, typically 6 to 12 hours after a high dose. Non-chlorine shock allows safe re-entry within one hour.

Do I need to brush after shocking?

Yes. Brushing lifts settled debris and biofilm so the shock can break it down and the filter can capture it.

Why did my shock not work?

Common causes are pH too high, stabiliser too high or the dose being too small for the pool volume. Retest, drain partially if needed and re-dose.

Pool Shock Treatments

A weekly shock dose breaks down the combined chlorine, sweat and sun cream that ordinary sanitiser cannot reach. ClearPool shock treatments cover every situation from a maintenance dose to an emergency clear-up of green or cloudy water.