3 Steps to Clear a Green Pool After Rain

Test and adjust pH Check your water and bring pH to 7.2–7.4. If pH is high, shock treatment won’t work effectively.

Shock the pool Add a heavy dose of pool shock to kill the algae bloom. Heavy rain dilutes chlorine and shifts pH, which lets algae take over.

Brush and run the pump Brush all pool surfaces to loosen algae, then run the pump continuously until the water clears.