DIRECTIONS FOR USE:
NOTE: To be used monthly or when the cartridge filtration capacity is decreasing.
1. Stop the spa and remove the cartridge(s).
2. In a plastic pail, prepare a solution of 250 mL in 5 L of water.
3. Place the cartridge upright into the pail, covered with solution. Allow to soak for about 1 hour, then remove cartridge from the solution. Start again for multiple cartridges (can also be done at the same time).
4. Rinse cartridge immediately with fresh water.
5. Replace and start the spa.