If you are thinking of doing periodic spa maintenance but need help on what to do, maybe this will help.
One of the things that you should do on a regular basis is check your filtering system. A clogged up and dirty filter will fail its job of trapping contaminants. The filters need to be cleaned with every water change and should be replaced yearly.
Spa filter cartridges need to be rinsed out every two weeks. You can use a garden hose to do the job. Apply the water stream at a 45 degree angle, making sure that any foreign matter that is in it is dislodged by spraying between each pleat. With every water change and at least every 3 to 4 months, your cartridge should be rinsed with the garden hose and then soaked overnight in a non foaming filter cleaning compound. Then it should be rinsed again and allowed to dry out.
As for winterizing your spa tub, you should always start by shutting off the heater and then powering off the spa. You should also switch off the power service at the breaker panel or disconnect the box for safety. The next thing you should do is flush out the system and then drain your spa. After you flush out the system, empty the water by opening the drain valve. Some spas let you use a garden hose to carry the water away. A spa vac or pump may speed up the draining and remove any left over water and debris from the foot wells. If your tub has an air blower, you should use it to to dry up the water as well.