Unsafe. When the water in a swim spa hot tub becomes cloudy, it often indicates a malfunctioning or overloaded disinfection system. At this time, bacteria, mold, and algae will multiply rapidly. Common pathogens include: • Pseudomonas aeruginosa • Legionella • Candida, mold

Under most normal operating conditions, it is recommended to clean the swim spa hot tub filtration system every 1-2 weeks. This frequency applies to the following situations: • Moderate usage frequency • Relatively standardized water quality management • Few users • Water remains clear for extended periods

Without any disinfection, the water in any spa hot tub can become a breeding ground for microorganisms within a day. Therefore, the water quality in a spa hot tub without disinfectant begins to spiral out of control within 4 hours and becomes unsuitable for soaking within 24 hours.

Correct order: Add acid first, wait for the water to fully mix and circulate, then add chlorine. Specific steps are as follows: 1. Test water quality parameters 2. Add acid (pH adjuster) 3. Add chlorine (disinfectant) Never add acid and chlorine at the same time or in the same area!

The answer is yes. Low pH in swim spa hot tubs is not only harmful to the equipment but can also irritate human skin and eyes. When the pH of the water is below 6.8, the acidity can irritate the conjunctiva of the eyes, causing redness, tearing, and even a burning sensation.

Researchers and health experts generally believe that spa hot tubs do not directly "cure depression," but rather indirectly alleviate depression-related symptoms by promoting relaxation, improving sleep, and lowering stress hormone levels.