Especially with intensive use of the spa, the filter cartridges are put to the test. You should therefore have several spare filter cartridges. This way, one cartridge can remain in operation when you clean the other. The filter cartridge is best cleaned with Filter Cleaner.

- Remove the cartridge from the filter and rinse it with a water hose from top to bottom to remove loose dirt.

- Now place the cartridge in a bucket and add 1 liter Filter CLeaner per 10 liters of water.

- Soak for 16 to 24 hours.

- Rinse vigorously with water until all dirt residue has disappeared.