Â· Modern Use. Today, basalt is used to a lot of things. Most common use of. is as aggregates. Basalts that are crushed are used for construction purposes, like asphalt paving, concrete aggregate and rock filtering agents. Basalts are added as aggregates to increase strength to concrete. Modern Use. Today, basalt is used to a lot of things. Most common use of. is as aggregates. Basalts that are crushed are used for construction purposes, like asphalt paving, concrete aggregate and rock filtering agents. Basalts are added as aggregates to increase strength to concrete.
Typical filtration cycles are four hours, twice per day (for hot tubs operating a single or two speed pump). Reducing the cycles to 3 hours twice per day will save water pumping energy. These circulation times should be set for off-peak hours. (Some hot tubs have small, low wattage circulating pumps that run 24 hours a day. Typically these draw less energy than a 100 watt light bulb.
Varied Life Expectancy. Inexpensive hot tubs that are not constructed with quality materials may last only about five years. At the other end, hot tubs made with high-quality materials that also typically come with a long warranty and a high price tag, can last 20 years or more. Mid-grade hot tubs have an average lifespan of around 10 years. The length of the warranty is not always equal to the lifespan of the unit, but it is a good indicator of longevity. In addition to the quality of construction and materials, the life of your hot tub depends on the care it receives.