The frequency of disinfection for a whirlpool spa hot tub depends on: • Usage frequency • Number of users • Water volume and circulation system design • Whether chlorine or bromine tablets are used to maintain daily water quality For ordinary household users, thorough disinfection at least once a week is a basic requirement for maintaining water quality safety.

1. Use appropriate chemical disinfectants 1) Chlorine disinfection Recommended chlorine concentration: 1–3 ppm (parts per million). 2) Bromine disinfection Recommended bromine concentration: 3–5 ppm. 3) Hydrogen peroxide disinfection Recommended concentration: 10–20 ppm. 2. Ultraviolet disinfection

Children over 2 years old: Can soak briefly in a specially temperature-controlled hydrotherapy hot tub. Water temperature not exceeding 37.5°C (99.5°F); time limited to 5–10 minutes; adult supervision is required.

A steam shower room is a closed bathroom device that integrates regular hot water showering with steam generation. It typically consists of a sealed shower enclosure, a steam generator, an electrical control system, a ventilation system, and a multi-functional control panel.

Total Alkalinity (TA) – The First Step to Balancing Total alkalinity measures water's buffering capacity against pH changes; it can also be understood as the "foundation of water quality stability." • Ideal Range: 80–120 ppm. If alkalinity is too low, pH will fluctuate frequently; if alkalinity is too high, pH adjustment will become difficult.

If multiple jets are turned on, the increased water flow will also increase the pump load, which may actually reduce the heater's heating efficiency. This is because the heater requires a certain water flow rate to effectively transfer heat, and excessive water flow may dilute the heat transfer effect.