Thermal therapy studies have shown that immersion in water around 40°C for 15 to 30 minutes can increase skin blood flow by 30% to 50%. Combining a spa hot tub with jet massage can enhance local muscle blood flow and accelerate the excretion of metabolic waste.

Chlorine is suitable for users with limited budgets who value rapid disinfection, but it is not the best choice for those sensitive to odors and skin irritation. Bromine is ideal for users who use whirlpools, spas, and hot tubs frequently and prioritize comfort and water quality stability.

Professionals recommend that pregnant women keep the water temperature between 36°C and 37.5°C when using a whirlpool spa hot tub. This temperature ensures a comfortable spa experience without causing hyperthermia.

If the water in a whirlpool spa hot tub hasn't been changed for a long time, or if the water source itself contains high levels of minerals, organic matter, or trace elements like iron and manganese, it can easily develop an unpleasant odor. Odors are particularly likely to occur under the following conditions: • Imbalanced pH • Excessive minerals • Insufficient disinfectant

Common whirlpool spa hot tub malfunctions include: 1. Water temperature fails to rise 2. The pump makes unusual noises or does not produce water 3. Uneven water flow from the showerhead or weak spray 4. The control panel malfunctions or displays an abnormal display 5. Cloudy water or an odor 6. The power supply trips or fails to start

• Regularly test the pH, hardness, and residual chlorine content of the hot tub water. • Adjust the dosage of disinfectant and water conditioner based on the test results to maintain stable water quality. • Use a water quality testing kit to ensure that water quality meets safety standards.