What causes cloudy pool water if chlorine levels are fine?

Cloudy pool water is usually a filtration or chemistry balance issue, not a chlorine problem. Check pump runtime (8-12 hours/day in summer), clean or backwash the filter, and test pH (target 7.4-7.6) and alkalinity (80-120 ppm). If those are fine, use a clarifier or flocculant for tiny suspended particles. Don’t shock—it wastes chemicals.