That question can't be answered because there is no dimension for the height of the hot tub.
A walk in tub holds over 55 gals of water (with an average size body in the tub). A 40 gal. water heater will deliver 28 gals. of water before it has to recover. You can do two things. You can buy a larger heater - 65 to 75 gals. These get pretty big and expensive. If you already have a good 40 gal. heater in your home, buy a second one and run them in tandem, meaning that the second water heater flows into the first one, which is the one supplying the water to its destination. By doing this, when the hot water starts to drain from the first, instead of the water heater filling with cold water that has to first be heated, the second water heater is delivering hot water instead. 40 gal. heaters are relatively cheap. That is the way I would go.
The number of gallons of water a Cal Spa hot tub can hold varies. Each hot tub in this brand is a different size and therefore can hold different amounts of water.
A Jacuzzi is a brand of hot tub which is so popular that many hot tubs of different brands are called Jacuzzi's. Typically, a Jacuzzi has jets of water or air. A hot tub usually does not have the jets, its just a tub of heater water.
The average-size hot tub holds approximately 475 gallons of water. The earliest known hot tubs were calderas. Hot stones were used to heat the water.
That could heavily depend on the total capacity of the tub, and on how full you fill it.
A standard typical 8x8 hot tub holds between 400 and 500 liters of water. Larger hot tubs can hold around 1,500 liters of water.
100
350 gallons
560
No, hot tub water does not boil. Hot tubs are typically maintained at temperatures below the boiling point of water to ensure the safety and comfort of users. Boiling water in a hot tub would be dangerous and impractical.
A hot tub is just that a tub of hot water thus, the need for a heater. To reek the benefits and pleasures of owning a hot tub a heater is an essential element to the experience.
That depends on the dimensions of the tub, and also on whether or not anyone has put any water in it.