Few things are more frustrating than walking outside to find your once-clear pool has turned green or cloudy. The good news is that both problems have understandable causes and clear fixes. Here is what causes green and cloudy water, how to clear it up, and how to keep it from coming back in the North Texas climate.
Why pools turn green
A green pool is almost always algae. Algae blooms when sanitizer drops too low to keep it in check, which can happen fast in hot weather, after heavy rain, or when chemistry has been neglected for a stretch. Once it takes hold, it can spread across the pool quickly.
Different shades hint at severity: a light green tint is an early bloom, while dark green or even black points to a more established problem that takes more work to clear. Either way, the root cause is sanitizer that fell behind.
Why pools turn cloudy
Cloudy water is different from green and usually points to one of a few issues: unbalanced chemistry, poor filtration or circulation, or fine particles the filter cannot catch. It can also follow heavy use, a storm, or a recent chemical treatment that has not cleared yet.
Cloudiness is a warning sign even when the water is not green. It often means the filter is not keeping up or the chemistry has drifted, both of which can lead to bigger problems if ignored.
How to clear it up
Clearing a green pool starts with testing and rebalancing the water, then shocking it to restore sanitizer, brushing thoroughly, and running the filter continuously until it clears. Heavy blooms may need repeated treatment and filter cleaning.
For cloudy water, the fix is identifying the cause: balance the chemistry, ensure the filter and pump are working and running enough, and clean or backwash the filter. A clarifier can help the filter catch fine particles. Persistent cloudiness usually means an equipment or chemistry issue worth a professional look.
Preventing it from happening again
Prevention comes down to consistency: keep sanitizer and chemistry balanced, run the pump and filter enough, especially in summer, and clean regularly. Most green and cloudy water traces back to a stretch where maintenance slipped.
This is exactly where regular professional service pays off. Weekly testing and balancing keeps sanitizer ahead of algae and catches small problems before the water ever turns. If your pool keeps going green or cloudy, a maintenance plan is the most reliable fix.
Ready to start your project?
Schedule a free on-site consultation and we will help you plan a pool built for your backyard and budget.
Get a Free Quote
