Spa water has a strong chemical or musty odor.

Safety first: Avoid using the spa until water is properly sanitized.

• Test and balance: Check sanitizer, pH, and alkalinity. Adjust to recommended Clearwater Spas ranges.
• Shock treatment: Perform a heavy shock to break down organics and combined chlorine.
• Clean filters: Soak filters in a spa filter cleaner solution and rinse thoroughly.
• Plumbing purge: Periodically use a spa plumbing purge product to remove biofilm, then drain and refill.