Filling your spa for the first time
Fill your hot tub, and install the filters. Run your hot tub on clean mode. If your hot tub does not have clean mode, run the jets for 30 minutes.
Re-filling your spa (every 3-6 months)
Drain the water from your spa.
Take your filters out and clean them. Use a 5 gallon bucket and fill it with Filter Clean and water. Let your filters soak for 3 to 12 hours. Rinse filters with water and re-install them.
NOTE: For very dirty hot tubs, use a bottle of Breakaway Flush while the tub is still filled with water and the filters are removed. This will flush all of the lines and jets, before you drain your tub.
Re-fill your spa. Run the hot tub on clean mode. If your hot tub does not have clean mode, run the jets for 30 minutes.