Quantum® Pool
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Cloudy, Dull Water

Possible Cause Solution Preventative Maintenance

Backwashing sand filters too often

Backwash less frequently, only as recommended by filter manufacturer’s directions.

Use ​Quantum® Filter Clean once every month or two months, depending on level and frequency of pool occupancy.

Dirty filter

Clean filter with ​Quantum® Filter Clean.

Backwash as necessary and clean filter thoroughly as needed.

Dissolved metals in the water

Use ​Quantum® SeQuest-All to control metals in water.

Use ​Quantum® SeQuest-All (4 fl. oz. per 10,000 gallons) weekly to prevent stain and scale formation.

Filter not removing small particles

Use ​Quantum® Ultra Blue to coagulate small particles. Check filter operation.

Use ​Quantum® Ultra Blue clarifier (1 fl. oz. per 6,000 gals.) weekly.

Free chlorine residual too low

Test for chlorine residual and adjust as needed. Shock treat with Quantum® Q-Shock II.

Maintain free chlorine level of 1-4 ppm.

pH too high

Test pH and total alkalinity. Add pH Down as directed and adjust as required.

Test frequently and maintain a pH of 7.2–7.8 and a total alkalinity level of 80-120 ppm.