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Most spa's and hot tubs are 4 1/2' deep.
The average income for a small spa depends on the area where the spa is located. A small spa in a rural area might make 160,000 dollars per year while a small spa in an urban area might make 800,000 per year before expenses. .
The average cost for a day spa can be close to $500 in Beverly Hills. Prices vary depending on services requested.
That depends on how big the "average" casino is.
80% minimum
Around $25 an hour
300 to 800 gallons
It's tough to make a spa/hot tub with jets, but an above ground type pool is not hard. The fiberglass on a spa is the hard part, but if you could get that & pump system, decking can all be built with some help from a carpenter.
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Area and perimeter can be used for measuring things such as lawns (for lawn care) or an area of ground for cement (to order the cement)
it depends on what type of measurement you are using
The amount of water required to fill an average sized portable outdoor spa is in the region of 265 gallons. This equates to approximately 1000 liters of water.