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Hydrogen peroxide is available in a variety of concentrations, and the concentration commonly used in outdoor spa hot tubs is 35% food grade. This concentration can effectively kill bacteria without causing excessive irritation to the human body and the outdoor spa hot tub.

Generally, the standard size of a double outdoor garden hot tub is roughly between 1.5 meters and 2 meters, the width is about 1.2 meters to 1.5 meters, and the depth is usually between 60 and 90 centimeters.

The total current demand of the outdoor spa hot tub can be estimated as the sum of the current of the heater, water pump and other electrical equipment. Assuming the heater is 4,000W, the water pump is 2,000W, and the other equipment is 500W, the current demand is: Itotal​=18.18+9.09+2.27≈29.54 amps (A)

The freezing point of water is 32°F (0°C). When the outside temperature is lower than this point, the water will gradually freeze. In the use of an outdoor spa hot tub, if the water stays in the pipe without sufficient flow or heating, the water in the spa hot tub pipe will begin to freeze when the temperature drops below 32°F.

If an outdoor spa hot tub is used frequently, especially when used by multiple people, the pollutants in the water will increase rapidly and the rate of ozone consumption will also increase. In this case, it is recommended to refill the spa hot tub with ozone every day.

On December 31, 1979, the U.S. Consumer Product Safety Commission (CPSC) issued Notice No. 79-071. The notice clearly warned that hot tub water temperatures reaching or exceeding 106°F (about 41°C) could cause serious health problems, especially heat stroke.

The main component of vinegar is acetic acid (acetic acid), which is usually a 5% concentration in water. Acetic acid is somewhat acidic, which means that it can effectively clean the surface of outdoor spa hot tubs by neutralizing alkaline substances or dissolving mineral accumulation.

In general, it is necessary to test the outdoor whirlpool hot tub water quality at least once a week. This applies to most whirlpool hot tubs for home and private use. Testing once a week can help detect water quality problems such as high or low pH, insufficient chlorine content, etc. in time.

Most outdoor hot tub covers have a very limited weight capacity, usually between 50 and 100 pounds (about 23 to 45 kilograms). This means that they can withstand some minor pressure, such as the weight of leaves, snow or rain, but are not suitable for adults or heavy objects to sit directly on them.

Although there is a possibility of virus transmission, it does not mean that it will definitely spread in large quantities in the water. In fact, the risk of herpes transmission in an outdoor whirlpool hot tub is not high. The key is whether there is an opportunity for direct contact with an infected person.

during the rainy season or when leaves fall a lot, covering the whirlpool spa hot tub can effectively prevent water contamination. In the dryer climate and warmer seasons, if the tub is not used for a long time, keeping the lid open can help ventilate and prevent bacteria from growing.

if an exterior hot tub is equipped with a 3-horsepower pump, the pump can support up to 10-12 spa jets, and each jet can provide enough water flow for a moderate intensity massage. For those who want a strong spa effect, a 4-5 horsepower pump can be selected. Such a system can not only support more jets, but also provide a stronger massage effect.