Why Is My Pool Water Cloudy? 7 Causes and Fixes for Orlando Pools
Cloudy pool water is the most common complaint we hear in East Orlando, and it's almost always one of seven causes.
The Quick Diagnostic
- High pH (above 7.8) — the #1 cause in Central Florida
- High calcium hardness — common on well water
- Dirty filter — 8+ psi above baseline
- Early algae bloom — cloudiness with a green tint
- Low chlorine — under 1 ppm free chlorine
- High cyanuric acid — above 80 ppm
- Post-storm dilution — heavy rain drops pH and chlorine
The 7 Causes of Cloudy Water
1. High pH
Above 7.8, calcium starts precipitating out of solution — the pool looks milky.
2. High Calcium Hardness
Above 400 ppm, calcium clouds the water and scales the tile and heater.
3. Dirty or Undersized Filter
A clogged filter can't remove the fine particles that make water cloudy.
4. Early Algae
Cloudy with a green tint is algae in the earliest stage.
5. Low Free Chlorine
Under 1 ppm, organic material accumulates and the pool clouds.
6. High Cyanuric Acid (CYA)
Above 80 ppm, chlorine is present but chemically "locked" and doesn't sanitize.
7. Post-Storm Dilution
Heavy Orlando thunderstorms dilute chlorine and drop pH.
How to Fix Each One
- High pH: Add muriatic acid or dry acid to bring pH to 7.4
- High calcium: Partial drain and refill
- Dirty filter: See pool filter cleaning
- Early algae: Shock with cal-hypo, brush, run pump 24/7 for 48 hours
- Low chlorine: Shock to 10 ppm, then maintain 2–4 ppm
- High CYA: Partial drain and refill
- Post-storm: Rebalance pH and alkalinity, then shock
How to Keep It Clear
- Test 2–3 times a week
- Keep pH between 7.2 and 7.6
- Keep free chlorine between 2 and 4 ppm
- Keep cyanuric acid between 30 and 50 ppm
- Clean the filter on schedule
- Consider consistent weekly pool service
When to Call a Pro
Cloudy for more than 72 hours despite balanced chemistry, chlorine that won't hold, or cloudy with visible surface staining — those are professional calls. Reach us at (407) 782-9432 or through our contact form.
Frequently Asked Questions
Why is my pool cloudy but chlorine is high?
Almost always high pH, high calcium, or a dirty filter.
How long to clear a cloudy pool?
24–72 hours with correct chemistry and 24/7 filter run time.
Can I swim in a cloudy pool?
No — you can't see the bottom, which is a real safety risk.
The Sunny Clean Pool Team
Licensed, insured pool professionals serving Waterford Lakes, Avalon Park, Oviedo, Winter Park, Wedgefield, and East Orlando. Weekly service, green pool recovery, filter cleaning, and equipment repair — done right the first time.
(407) 782-9432Need Reliable Pool Service in East Orlando?
Whether you need weekly pool service, a green pool cleaned up, your filter cleaned, or pool equipment repaired, Sunny Clean Pool is here to help. We proudly serve homeowners throughout Waterford Lakes, Avalon Park, Oviedo, Winter Park, University, Wedgefield, and surrounding East Orlando communities.
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