Water has a strong chemical or musty odor despite normal sanitizer levels.

Safety first: Handle spa chemicals with gloves and eye protection, and follow label directions.

• Shock the spa: Add a non-chlorine shock or chlorine shock per Dynasty Spas water care guidelines to oxidize contaminants.
• Clean or replace filter: Deep clean the filter with a filter cleaner or replace if more than 1 year old.
• Use plumbing cleaner: Before the next drain, run a spa plumbing purge product to remove biofilm from lines, then drain and refill.
• Adjust filtration cycles: Increase daily filtration time via the control panel to improve water turnover.