Cloudy pool water can be a result of several factors, including improper water balance, inadequate filtration, or the presence of contaminants. If your pool water turns cloudy, first check and adjust the water chemistry parameters within the recommended ranges. Ensure your pool filtration system is working correctly, clean or backwash the filter if necessary, and run the pump for an extended period to promote better water circulation. If the problem persists, consider contacting a professional for further assistance.