1. Drain hot tub and clean filters with a product such as Spa Marvel Filter Cleaner.
2. Fill spa and heat to normal operating temperature.
3. Add on bottle for up to 2000 L of fresh water.
4. Balance pH and alkalinity if necessary.
5. For best results set the spa’s filtration settings for a minimum of 6 hours a day.
6. Clean filter as necessary.
7. Use sanitizer as required.
8. One bottle of Spa Marvel Treatment will last up to 3 months.