To ensure proper filtration of your spa, you should clean the filter cartridge regularly. You can use Spa Cartridge Cleaner for this.
The product removes oil, fat and calcium scaling from the filter so that it works like new again. We recommend doing this at least once a month. If you notice your filter is not working properly, this product may be the solution.
Place the filter cartridge in a bath or reservoir and fill with Spa Cartridge Cleaner.
Let the filter sit in the product overnight to allow the Cartridge Cleaner to soak in well.
Then rinse with water and reinstall.