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Baking soda dosage formula Based on empirical data, it takes about 1.5 pounds (about 680 grams) of baking soda to increase the alkalinity by 10 ppm for every 10,000 gallons of water. A 500-gallon outdoor whirlpool hot tub requires 170 grams of baking soda.

Calcium oxide cleaner is a professional scale cleaner commonly used in outdoor whirlpool hot tubs and swimming pools. It is suitable for removing mineral accumulation in water, including scale and rust. This type of cleaner usually dissolves in the bathtub water and helps remove scale and rust through chemical reactions.

The roller bearing of the outdoor whirlpool hot tub is responsible for supporting the rotating parts. If the bearing fails, it will cause abnormal friction noise, especially when the water flows through the nozzle and massage system.

Bacteria are one of the most common health risks in spa bathtubs, especially in the environment of outdoor whirlpool hot tubs, because its humid and hot characteristics provide ideal conditions for the growth of bacteria. One of the most common bacteria is Pseudomonas aeruginosa, which is particularly active in hot tub water.

If the outdoor whirlpool hot tub water temperature is high and the air temperature is also high, the chlorine may evaporate in just a few hours to a day. For example, over the course of a day's use, the water surface exposed to the air will accelerate the evaporation of chlorine, especially if the hot tub is not covered after use.

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.

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.

If the outdoor whirlpool hot tub water itself contains a large amount of minerals, especially alkaline substances such as calcium carbonate, the use of ozone may accelerate the precipitation reaction of these minerals, resulting in an increase in pH.

The bathtub's filtration system will work for 30 minutes to 1 hour during the impact process to ensure that the water quality meets the hygienic standards. However, the length of the filtration time also depends on the chemical agents used, the type of disinfection system (such as ozone disinfection, ultraviolet disinfection, etc.) and the degree of water pollution.

The air pump will make a certain noise when it is operating normally. Although this sound is not piercing, it should be even and continuous. If you find that the air pump is not very audible, or only intermittently, there may be something wrong with the air system.

The water in outdoor whirlpool hot tubs is usually warm, and the water temperature is generally maintained between 37°C and 40°C, which provides a suitable environment for the reproduction of bacteria. Staphylococcus aureus is a bacterium that easily reproduces in a warm environment. If the water quality of the bathtub is not properly managed, bacteria may grow in the water and be transmitted to the user through contact.

The use environment of a whirlpool hot tub is inherently very suitable for mold growth. Bathrooms are usually humid and poorly ventilated spaces. The humidity in the bathroom is further increased during bathing, and the water temperature is usually kept in a high range (30-40 degrees Celsius), providing ideal conditions for the growth of mold.