Legionella is most active in warm water environments (typically between 20°C and 50°C), with optimal growth in the 35°C to 45°C range. Legionella growth is inhibited or stopped below 20°C or above 50°C. Therefore, whirlpool hot tubs, water towers, and other facilities with warm water temperatures are ideal habitats for Legionella.

A young child's body temperature rises rapidly in the heat of a whirlpool spa hot tub. Even a brief immersion in 104-degree Fahrenheit water can cause a rapid increase in a child's core body temperature, potentially leading to hyperthermia and even symptoms of heat stress.

When heating a whirlpool spa hot tub, if the user wants to quickly increase the water temperature, turning off the jets may be a better option, so that the heater can work more efficiently without being disturbed by air mixing into the water flow.

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.

Excessive shock agents, especially those containing chlorine, release large amounts of free chlorine. Excessive chlorine not only makes the whirlpool spa hot tub water pungent but can also cause irritation to the user's skin, eyes, and respiratory tract.

·If the stabilizer content is too high, you can try to reduce the concentration by partial water changes. Generally speaking, replacing about one-third of the water can effectively reduce excessive cyanuric acid concentrations. ·If the level is too low, you can use stabilizer in the form of cyanuric acid granules or liquid to replenish it.