According to the Centers for Disease Control and Prevention (CDC) and the Consumer Product Safety Commission (CPSC), whirlpool hot tub water temperatures should never exceed 104°F (40°C). This is because at this temperature, the human body maintains normal thermoregulation and avoids hyperthermia.

Whirlpool hot tub water often uses an alkaline or acidic adjuster to maintain the pH within the appropriate range to prevent corrosion and minimize equipment damage. Excessively high or low pH levels can significantly affect plants and lawn soil, disrupting the soil's acid-base balance.

Symptoms of excessive bromine in an outdoor whirlpool hot tub: 1. Skin irritation and dryness 2. Eye and respiratory irritation 3. Cloudy water 4. Excessive foaming 5. Corrosion of metal and tub surfaces 6. Unpleasant odor

Due to voltage drops, extension cords may not provide stable voltage. This not only affects the operation of the whirlpool hot tub but can also damage the device. Large voltage fluctuations can damage electronic components, making repairs costly and potentially requiring the entire device to be replaced.

If you use a chlorine-based shocking agent, you need to wait for a period of time (usually about 24 hours) after the shock treatment to allow the chlorine content in the water to drop to a safe level (1-3 ppm) before using the whirlpool hot tub. If you use a non-chlorine shocking agent, you generally only need to wait 20-30 minutes before using the tub again.

Generally speaking, the effects of shock treatment can usually be seen within a few hours, but it usually takes 12 to 24 hours to completely remove pollutants and restore water quality. If the water quality has become significantly turbid or has an odor, the treatment time may be extended to 24 hours or even longer.