The design temperature of a swim spa hot tub typically doesn't exceed 40°C, while boiling water reaches 100°C. This high temperature can severely impact the heating system and other tub components. Adding boiling water not only harms the equipment but also affects water quality. The water in a swim spa hot tub needs a certain chemical balance to remain clean and safe.

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

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.

Theoretically, a swim spa hot tub can be installed underground, but its feasibility depends on several factors. Underground spaces are characterized by being enclosed, having high humidity, and limited ventilation, which may affect the normal use and safety of the swim spa hot tub.

In a swim spa hot tub, you can do exercises like jumping jacks, knee raises, leg raises, and side steps, all set to music for a relaxing aerobic workout. • Duration: 20–30 minutes per session, moderate intensity. • Benefits: Improves cardiorespiratory endurance, burns calories, and increases metabolic efficiency.