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.

If you want to maximize the space of a whirlpool spa hot tub in certain occasions, such as when hosting a party, a 7' x 7' tub can theoretically squeeze in up to 8 people. However, this experience may not be ideal.

Studies have shown that the amount of chlorine absorbed through the skin depends on the concentration of chlorine, the duration of immersion, and the individual's skin sensitivity. Although the amount of chlorine absorbed in a short period of time is small, prolonged exposure to chlorinated hot water may increase the total amount absorbed.

1. Electricity safety distance Generally speaking, the whirlpool hot tub should be at least 1.5 meters away from any electrical equipment (such as wires, transformers, sockets, etc.). 2. Fire protection requirements According to fire safety regulations, the whirlpool hot tub should be at least 1.5 meters to 2 meters away from the wall of the house.

In the United States, according to the provisions of NEC Section 680 for swimming pools, spa hot tubs and similar facilities: · The circuit breaker box or any electrical equipment that requires manual operation must be installed at least 5 feet (about 1.52 meters) away from the spa hot tub.

For those who have a large outdoor space and want to use a spa tub for parties or large family events, a large outdoor spa hot tub is the best choice. Large tubs can usually accommodate 7 to 10 people, or even more.