The Hot Tub has a drain or a plug. A hosepipe can be installed and an outlet valve. This enables to direct the water to a specific place (for example, for watering your garden).
It is unnecessary to change the water every time after having used the Hot Tub. The change of water should only be made if necessary.
Bathing supplements which are biodegradeable should be used. This avoids fungal infestation or the growing of algaes. It is important that the water in the Hot Tub does not freeze in the winter season because the ice may damage the Hot Tub wood.