Turn off power to the spa tub
Remove the cover
Remove filters and rinse them
Drain the tub completely
Wipe down the shell with a non-abrasive spa cleaner
Scrub the waterline and jets with a soft cloth or sponge
Clean the filter housing and skimmer area
Rinse the shell thoroughly
Clean and reinstall the filters
Refill the tub with fresh water
Add the proper water treatment chemicals
Turn the power back on
Run the jets briefly to circulate the water
Test and balance the water chemistry
Wipe the cover and let it dry before replacing it