How to clear a green pool
A green pool means algae has outgrown the chlorine. Clearing it is mostly about killing the algae, removing it, and filtering the water until it tests in range.
The basic steps
- Test the water first — pH needs to be in range for chlorine to work well
- Brush the walls and floor to break up the algae
- Shock the pool with a large chlorine dose
- Run the pump continuously and clean the filter often while the water clears
- Vacuum the dead algae once it settles
- Re-test and repeat until the water is clear and balanced
How long to wait to swim after shocking
Wait until free chlorine drops back to a normal swimming level (roughly 1–3 ppm). Depending on the dose and sun, that is often between several hours and a day — test before anyone gets in.
When to call a professional
If the pool is dark green or black, the filter or pump isn't working well, or it has been neglected for weeks, a professional restoration saves time and chemicals. We quote it on site after a diagnostic.
Frequently asked questions
Why did my pool turn green so fast?
In tropical heat chlorine is consumed quickly; a week without adding it, especially after rain, is often enough for algae to bloom.
Related
Year-round pool service in Costa Rica
Tamarindo · Jacó · Herradura · Los Sueños — soporte@azurapool.com · WhatsApp +506 7240 3708
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